Без названия

[revold--blog]

Build your own search engine with ht://Dig

Most Linux users know how easily they can run a Web server on their favorite distros. Unfortunately, serving pages is one thing — finding them is another. That’s when many users turn to ht://Dig.ht://Dig is more than a simple search script for a Web site. It combines a powerful collection of command-line search utilities with an easy-to-use CGI script. Properly configured, they work together to form a robust, extensible search engine for a domain or intranet.Like Google, ht://Dig can search PDF, PostScript, Microsoft Word, Microsoft Excel, and Microsoft PowerPoint files, in addition to the expected plain text and HTML files. Unlike some search utilities, it maintains its database in plain text files, keeping software dependencies low.ht://Dig is available as a set of stable binary packages for all the major distros. Most split the program into two packages: htdig, which contains the command-line utilities, and htdig-web, which contains the CGI script. Download and install both from your favorite repository, or binaries and source code are available from the project’s site. As of this writing, the most recent production version is 3.1.6.Out of the box, ht://Dig is limited to searching plain text and HTML files. Fortunately, a number of conversion utilities can expand its reach. This tutorial includes instructions for indexing PostScript, PDF, Microsoft Word, Microsoft PowerPoint, and Microsoft Excel Files. But first, you need to install the following additional packages:- Catdoc- Xpdf (for pdftotext)- Ghostscript (for ps2ascii)- xlHtml (for xlHtml and pptHtml)These conversion utilities act as plug-ins for ht://Dig by converting foreign file types to plain text. All four are available as binary packages for the major distros. (xlHtml is slightly more difficult to find, but good binaries are out there.) Install them from your CDs or favorite repository.Finally, you need doc2html. This collection of Perl scripts serves as a go-between for ht://Dig and the other utilities. Download it from ht://Dig’s parsers directory. I recommend you unpack the archive to /opt/local/htdig/scripts/. That way, you won’t need to change as many paths when we configure the script.Configure the conversion utilitiesThe main script in the doc2html collection is doc2html.pl. Open it in your favorite text editor and scroll down until you see these lines:######## Full paths to conversion utilities ################## YOU MUST SET THESE ################## (comment out those you don't have) ##########Below them is a list of variables that call the conversion utilities. Before you can use these utilities, you must specify the full path to where it’s installed in the appropriate variable.Let’s do the conversion utility for Microsoft Word documents first. Find these lines:#version of catdoc for Word6, Word7 & Word97 files:my $CATDOC = '';Go to the second line, and insert the path for your installation of catdoc between the quotation marks. For my installation, the modified line looks like this:my $CATDOC = '/usr/bin/catdoc';Now activate the rest of the utilities in the same fashion. Double-check the path for each application on your system and correct them if necessary.- For Microsoft Excel: my $XLS2HTML = '/usr/bin/xlhtml';- For Microsoft PowerPoint: my $PPT2HTML = '/usr/bin/ppthtml';- For PDF: my $PDF2HTML = '/opt/local/htdig/scripts/pdf2html.pl';- For PostScript: my $CATPS = '/usr/bin/ps2ascii';The configuration file includes variables for WordPerfect, Flash, Shockwave, and rich text file types as well, but you do not have to install and configure every utility available. Feel free to pick and choose.Lines that point to missing conversion utilities should be left alone. Pay special attention to this, because the instructions included in htdig.conf are incorrect. This line — ######## (comment out those you don't have) ########## — is wrong. Do not comment out the variables that point to utilities you don’t have.When you’re finished, save and close the file.You need to configure one more script from doc2html. PDF files require a little extra help, so open pdftohtml.pl in your text editor. Scroll down until you see my $PDFTOTEXT and my $PDFINFO. Change the value in quotations for each of these to the full path for pdftotext and pdfinfo, respectively. On my system, the modified lines look like this:my $PDFTOTEXT = "/usr/bin/pdftotext";my $PDFINFO = "/usr/bin/pdfinfo";When these are correct, save and close the file.Configure ht://Dig — essentialsht://Dig’s main configuration file is htdig.conf. On my system, it installs in /etc/htdig/. Open this file in your text editor, scroll down to the end, and find start_url. (This is also listed near the beginning of the file, but it is commented out and should be ignored.) Set this variable to the URL or URLs that you want to index. Erase the comment sign, if present, and enter your addresses after the colon. Separate multiple URLs with white space.Make your entries here as specific as possible. If the files you want to index are contained in a specific directory, then give the URL with the path to that directory, instead of the base URL alone. This will keep your index as lean (and as fast) as possible.The edited line should look something like this:start_url: http://www.foo.com/PDFs/ http://www.foo.com/word-docs/Next, scroll down until you see limit_urls_to: ${start_url}.You don’t need to change this line, but you should be aware of it. This prevents ht://Dig from following links to URLs other than those you specify. Otherwise, the program would try to index the entire Internet. The only circumstance in which you would change this would be for a domain or intranet with zero outbound links.Now it’s time to tell ht://Dig how to play nice with the conversion utilities. Make some whitespace below the previous line, and enter these lines:external_parsers: application/pdf->text/html/opt/local/htdig/scripts/doc2html.plapplication/postscript->text/html /opt/local/htdig/scripts/doc2html.plapplication/msword->text/html /opt/local/htdig/scripts/doc2html.plapplication/msexcel->text/html /opt/local/htdig/scripts/doc2html.plapplication/vnd.ms-excel->text/html /opt/local/htdig/scripts/doc2html.plapplication/vnd.ms-powerpoint->text/html /opt/local/htdig/scripts/doc2html.plThe above code assumes that you installed doc2html in the recommended location. If not, change the path in the second half of each line to match your installation. Each new file type requires a line in this section, so if you decide to install one of the conversion utilities that I skipped, don’t forget to add a line for it, too. You can find sample lines for each of the conversion utilities at the top of doc2html.pl.Finally, scroll to the bottom of the configuration file and find local_urls_only: true. This line limits ht://Dig to files on its home computer. If you plan to index files on other machines, you should comment out this line by placing a pound sign in front of it.Configure ht://Dig — little thingsBy now your configuration file is in pretty good shape, but there are still a couple of things you can do.Scroll down until you see max_head_length. This value determines how many bytes from each document is stored in the index. Comments in htdig.conf suggest you set this to about 50,000 if you want to index most of the text in each document. Just to be sure, I set mine to 80,000, and tests confirmed that it grabbed every scrap of text from my files. A higher number will increase the size of your database, so remember to balance the quality of your index with the free space on your hard drive.Below this, you will find max_doc_size. This value sets the size cutoff for indexed files. Leaving it at the default setting of 100KB will mean that your 1.5MB PDF files are ignored. I wanted to index a collection of very large PDFs, so I set mine to 2.5MB. (This value must be set in bytes, too, so 2.5MB becomes 2500000.)When you’re finished, save your work and close the file.Index and searchNow comes the fun part. Open a terminal, and type rundig -vvv.Rundig is a script that calls all of the ht://Dig utilities necessary to create your index. The -vvv flag tells the script to be as verbose as possible, so you can see if any serious errors occur. Indexing can take a long time for a large domain or intranet, so be prepared to wait. The process is also a CPU hog, so don’t count on playing Quake to pass the time. (Not on the same machine, anyway.)When your index is ready, open your Web browser and point it to http://localhost/htdig/search.html. If that doesn’t bring up the search page, double-check your install location for the htdig-web package. On my machine, ht://Dig installs its default search page to /var/www/html/htdig/search.html and its CGI script to /var/www/cgi-bin/htsearch.Use the provided search form to perform searches on your new index. If you’re not seeing as many results as you expect, try increasing the value for max_head_length in htdig.conf.Issues and limitationsOne common problem is that ht://Dig creates a new index each time rundig is invoked, rather than simply updating its existing index. This keeps your index lean by purging dead links, but it also immediately destroys your existing database, halting searches until the new one is complete. To keep the old database available for searching while the new one is being built, index with this command: rundig -a. The -a option causes the new index to be created as a copy until it is finished.No hard-coded limits cap the database size, so ht://Dig will happily store gigabytes of search data in its index. Make sure that you’ve allocated plenty of room for the partition that contains the default database location, /var/lib/htdig. If you need more, you can change the database location by altering the database_dir variable in htdig.conf.Learning more with us Read the full article

[revold--blog]

How to Install Virtualmin on Ubuntu 22.04 or 24.04

How to Install Virtualmin on Ubuntu 22.04 or 24.04Virtualmin is a powerful and flexible web hosting control panel that simplifies server management by providing an easy-to-use interface. With Virtualmin, you can manage websites, databases, users, and security settings efficiently.Virtualmin features a number of scripts that can simplify the process of installing and maintaining software on your servers. It comes with a script installer for popular applications like Drupal, Joomla, bbPress, Django… and many others.Virtualmin also provides an updater tool to help you update all aspects of your server software in a single operation. It even allows you to check for security updates and clone your entire Virtualmin installation with one click of a button.This guide explains how to install Virtualmin on Ubuntu 22.04 or Ubuntu 24.04 using an official installation script.Prerequisites- A Ubuntu 22.04 or 24.04 server- Root or sudo access to the server- A fully qualified domain name (FQDN) such as virtualmin.example.com- A firewall configured to allow necessary portsStep 1: Update Your SystemBefore installing Virtualmin, update the system packages to ensure everything is up to date:sudo apt update && sudo apt upgrade -yOnce the update is complete, reboot the server:sudo reboot nowStep 2: Download and Install VirtualminDownload the Installation ScriptVirtualmin provides an automated script to install all required dependencies easily. Download it using:sudo wget http://software.virtualmin.com/gpl/scripts/install.shGrant Execution PermissionAfter downloading the script, set the correct permissions:sudo chmod a+x install.shRun the Installation ScriptNow, run the installation script:sudo ./install.shThe installer will ask configuration questions. Press Y to continue and let the script complete the installation.Step 3: Set the HostnameVirtualmin requires a fully qualified domain name (FQDN). To set it, use:sudo hostnamectl set-hostname virtualmin.example.comReplace virtualmin.example.com with your actual domain.Step 4: Configure the Firewall for VirtualminVirtualmin uses port 10000 for its web interface. Allow this port in the firewall:sudo ufw enablesudo ufw allow 10000/tcpsudo ufw reloadTo verify the firewall status, run:sudo ufw status verboseStep 5: Access Virtualmin Web InterfaceOnce the installation is complete, access the Virtualmin web interface by opening a browser and entering your server’s IP address or domain name:https://your-server-ip:10000orhttps://your-domain.com:10000Since Virtualmin uses a self-signed SSL certificate, your browser may show a security warning. Click on Advanced → Proceed to the site.Log in using your root username and password.ConclusionYou have successfully installed Virtualmin on Ubuntu 22.04 or 24.04. Now, you can manage your web hosting, databases, and server settings through its web interface.Would you like help with configuring additional security settings, setting up website hosting, or automating backups? Let me know! Read the full article

[revold--blog]

PIVPN: Simplest way to setup a VPN

The simplest way to setup and manage a VPN,designed for Raspberry Pi™.- ::: INSTALLATION :::curl -L https://install.pivpn.io | bash- ::: Test (unstable) Branch :::curl -L https://test.pivpn.io | TESTING= bashSIMPLE ::: Yes, that’s it! It is *almost* that simple.To elaborate a little more, you will want to install Raspberry Pi OS Lite on a Raspberry pi, we strongly recommend using the latest Raspberry Pi OS Lite image but the normal Raspberry Pi OS image will work as well, preferably enable ssh access and then begin.After install, you may need to open a port on your router.There is a (now slightly outdated) guided walkthrough of the install available here.More information is also available on the PiVPN GitHubFLEXIBLE ::: Think if you can figure out how to do this yourself you’ll have more options?This installer is no slouch! It will allow you to customize your VPN port, key encryption strength, client DNS server, and more! Even if you are an expert, the options presented within are a perfect foundation for any openvpn server installation. Although this is geared toward running on a $35 Raspberry Pi™, the installer will work just as well on an Ubuntu or Debian server.MANAGEABLE ::: Installation is finished, now what do you do? No worries, we’ve got you covered!Provided free of charge on your server is a new ‘pivpn’ command. Simply run pivpn and you are presented with all of the available options. Easily add client profiles, revoke them, list the ones you created, etc. There is also an option to completely remove everything the installer did with the ‘pivpn uninstall’ command. So you can experiment with pivpn with no fear of irreversible changes to your server.SECURE ::: Even though this installer makes everything so trivial, it doesn’t mean it gives you trivial security settings.Everything has been upgraded right out of the box beyond the default settings to harden the security of the server and client. Starting with offering you the ability to enable unattended-upgrades which will automatically patch your server with security updates. Next, the server configuration will only use the latest TLS protocol. Both the data and control channels use upgraded AES and SHA256 encryption and hash algorithms. Options are pre-configured to verify your server certificate to battle MITM attack vectors. All this and more are configured out of the box by the pivpn installer. This is a detailed level of hardening you’ll have a difficult time finding elsewhere.AboutPiVPN is a set of shell scripts developed to easily turn your Raspberry Pi™ into a VPN server using two free, open-source protocols:- Wireguard- OpenVPNThis script’s primary mission in life is to allow a user to have as cost-effective as possible VPN at home without being a technical wizard, hence the design of PiVPN to work on a Raspberry Pi ($35) with a one-command installer followed by easy management of the VPN with the ‘pivpn’ command.That being said …PiVPN should be, bar none, the simplest and fastest way to Install and set up an extremely secure OpenVPN or Wiregaurd server on your raspberry pi. You won’t need a guide or tutorial as PiVPN will do it all for you in a fraction of the time with hardened security settings in place by default.We recommend running PiVPN on the latest Raspberry Pi OS Lite image in a Raspberry Pi at your home so you can VPN into your network from not secure remote locations and safely use the internet. However, you can also use PiVPN in any Cloud Provider VPS running Ubuntu or Debian to assist those with untrustworthy ISPs. Running a VPN on a server elsewhere means you can connect to the VPN from home, and because your traffic will be getting out from the cloud/VPS provider, your ISP will only see encrypted traffic.PiVPN should also work with most Ubuntu and Debian based distributions, including those using UFW by default instead of raw iptables. Why This Is Important?There are a few driving factors that make this very important to us, and we believe, the community at large. In this post-Snowden era where our privacy and security are infringed upon, not only by bad actors but potentially by those whom we thought should be protecting these very ideals, normal citizens must take matters into their own hands. The trouble with this, many times, is that if you are not very technical you may not know how to begin. I believe the EFF has helped lower a barrier of encrypted sites with their Let’s Encrypt initiative. Allowing many to now have their sites on encrypted channels. To us, the next logical step here is also ensuring the pipe you are using is as secure as possible. This not only could include unknown networks at airports, Starbucks, generic public hot-spots; but also your ISP. To that end, We’d like to make sure these scripts also work on a Debian image from an Amazon free tier server. It is important that more and more people, have access to protecting their traffic online. Its clear others won’t hand you this protection. PiVPN tries to make it easier for you to grab.Enjoy!FeaturesSupports unattended installation for automated deploymentsSupports OpenVPN 2.4Supports WireGuardElliptic curve encryption keys up to 512 bitIntegrates with BitwardeniOS keychain supportSupports multiple DNS providersSupports Custom DNS ServersCustom Search Domains (OpenVPN Only)Runs with Pi-Hole®Doesn’t need to be a Raspberry Pi™, It runs on any x86_64 system Read the full article

[revold--blog]

Install DockerExample for Linux Debian / Ubuntu:# Install default Docker Compose and automatically the corresponding version of Dockerapt install docker-composeQuick runExample running FreshRSS (or scroll down to the Docker Compose section instead):docker run -d --restart unless-stopped --log-opt max-size=10m -p 8080:80 -e TZ=Europe/Paris -e 'CRON_MIN=1,31' -v freshrss_data:/var/www/FreshRSS/data -v freshrss_extensions:/var/www/FreshRSS/extensions --name freshrss freshrss/freshrss- Exposing on port 8080- With a server timezone (default is UTC)- With an automatic cron job to refresh feeds- Saving FreshRSS data in a Docker volume freshrss_data and optional extensions in freshrss_extensions- Using the default image, which is the latest stable releaseComplete installationBrowse to your server https://freshrss.example.net/ to complete the installation via the FreshRSS Web interface, or use the command line described below.Command lineSee the CLI documentation for all the commands, which can be applied like:docker exec --user www-data freshrss cli/list-users.phpExample of installation via command line:docker exec --user www-data freshrss cli/do-install.php --default_user freshrssdocker exec --user www-data freshrss cli/create-user.php --user freshrss --password freshrssℹ️ You have to replace --user www-data by --user apache when using our images based on Linux Alpine.Our Docker image variantsThe tags correspond to FreshRSS branches and versions:- :latest (default) is the latest stable release- :edge is the rolling release, same than our git edge branch- :x.y.z are specific FreshRSS releases- :arm or :*-arm are the ARM arm32v7 versions (e.g., for Raspberry Pi).- For other platforms, see the custom build sectionLinux: Debian vs. AlpineOur default image is based on Debian. We offer an alternative based on Alpine (with the :alpine or *-alpine tag suffix). In our tests (2019), Alpine was slower, while Alpine is smaller on disk (and much faster to build), and with newer packages in general (Apache, PHP).ℹ️ For some rare systems, one variant might work but not the other, for instance due to kernel incompatibilities.Environment variables- TZ: (default is UTC) A server timezone (default is UTC)- CRON_MIN: (default is disabled) Define minutes for the built-in cron job to automatically refresh feeds (see below for more advanced options)- FRESHRSS_ENV: (default is production) Enables additional development information if set to development (increases the level of logging and ensures that errors are displayed) (see below for more development options)- COPY_LOG_TO_SYSLOG: (default is On) Copy all the logs to syslog- COPY_SYSLOG_TO_STDERR: (default is On) Copy syslog to Standard Error so that it is visible in docker logs- LISTEN: (default is 0.0.0.0:80) Modifies the internal Apache listening port, e.g. 0.0.0.0:8080 (for advanced users; useful for Docker host networking)- FRESHRSS_INSTALL: automatically pass arguments to command line cli/do-install.php (for advanced users; see example in Docker Compose section). Only executed at the very first run (so far), so if you make any change, you need to delete your freshrss service, freshrss_data volume, before running again.- FRESHRSS_USER: automatically pass arguments to command line cli/create-user.php (for advanced users; see example in Docker Compose section). Only executed at the very first run (so far), so if you make any change, you need to delete your freshrss service, freshrss_data volume, before running again.How to update# Rebuild an image (see build section below) or get a new online version:docker pull freshrss/freshrss# And thendocker stop freshrssdocker rename freshrss freshrss_old# See the run section above for the full commanddocker run ... --name freshrss freshrss/freshrss# If everything is working, delete the old containerdocker rm freshrss_oldBuild custom Docker imageBuilding your own Docker image is especially relevant for platforms not available on our Docker Hub, which is currently limited to x64 (Intel, AMD) and arm32v7.# First time onlygit clone https://github.com/FreshRSS/FreshRSS.gitcd FreshRSS/git pull --ff-only --prunedocker build --pull --tag freshrss/freshrss:custom -f Docker/Dockerfile .Development modeTo contribute to FreshRSS development, you can use one of the Docker images to run and serve the PHP code, while reading the source code from your local (git) directory, like the following example:cd ./FreshRSS/docker run --rm -p 8080:80 -e FRESHRSS_ENV=development -e TZ=Europe/Paris -e 'CRON_MIN=1,31' -v $(pwd):/var/www/FreshRSS -v freshrss_data:/var/www/FreshRSS/data --name freshrss freshrss/freshrss:edgeThis will start a server on port 8080, based on your local PHP code, which will show the logs directly in your terminal. Press Control+C to exit.Special development imagesℹ️ See the custom build section for an introductionTwo special Dockerfile are provided to reproduce the oldest and newest supported platforms (based on Alpine Linux). They need to be compiled manually:cd ./FreshRSS/docker build --pull --tag freshrss/freshrss:oldest -f Docker/Dockerfile-Oldest .docker build --pull --tag freshrss/freshrss:newest -f Docker/Dockerfile-Newest .Supported databasesFreshRSS has a built-in SQLite database (easiest and good performance), but more powerful databases are also supported:Create an isolated networkdocker network create freshrss-network# Run FreshRSS with a `--net freshrss-network` parameter or use the following command:docker network connect freshrss-network freshrssPostgreSQL# If you already have a PostgreSQL instance running, just attach it to the FreshRSS network:docker network connect freshrss-network postgres# Otherwise, start a new PostgreSQL instance, remembering to change the passwords:docker run -d --restart unless-stopped --log-opt max-size=10m -v pgsql_data:/var/lib/postgresql/data -e POSTGRES_DB=freshrss -e POSTGRES_USER=freshrss -e POSTGRES_PASSWORD=freshrss --net freshrss-network --name freshrss-db postgresIn the FreshRSS setup, you will then specify the name of the container (freshrss-db) as the host for the database.MySQL or MariaDB# If you already have a MySQL or MariaDB instance running, just attach it to the FreshRSS network:docker network connect freshrss-network mysql# Otherwise, start a new MySQL instance, remembering to change the passwords:docker run -d --restart unless-stopped --log-opt max-size=10m -v mysql_data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=rootpass -e MYSQL_DATABASE=freshrss -e MYSQL_USER=freshrss -e MYSQL_PASSWORD=freshrss --net freshrss-network --name freshrss-db mysql --default-authentication-plugin=mysql_native_passwordℹ️ The parameter --default-authentication-plugin is not needed if using PHP 8+ (which is the case for our Alpine images but not yet for our Debian images).In the FreshRSS setup, you will then specify the name of the container (freshrss-db) as the host for the database.More deployment optionsProvide default global settingsAn optional configuration file can be mounted to /var/www/FreshRSS/data/config.custom.php to provide custom settings before the FreshRSS setup, on the model of config.default.php.Provide default user settingsAn optional configuration file can be mounted to /var/www/FreshRSS/data/config-user.default.php to provide custom user settings before a user is created, on the model of config-user.default.php.Custom Apache configuration (advanced users)The FreshRSS Docker image uses the Web server Apache internally. Changes in Apache .htaccess files are applied when restarting the container. In particular, if you want FreshRSS to use HTTP-based login (instead of the easier Web form login), you can mount your own ./FreshRSS/p/i/.htaccess:docker run ... -v /your/.htaccess:/var/www/FreshRSS/p/i/.htaccess -v /your/.htpasswd:/var/www/FreshRSS/data/.htpasswd ... --name freshrss freshrss/freshrssExample of /your/.htaccess referring to /your/.htpasswd:AuthUserFile /var/www/FreshRSS/data/.htpasswdAuthName "FreshRSS"AuthType BasicRequire valid-userModify the configuration of a running FreshRSS instanceSome FreshRSS configuration parameters are stored in ./FreshRSS/data/config.php (e.g. base_url, 'environment' => 'development', database parameters, cURL options, etc.) and the following procedure can be used to modify them:# Verify the name of your FreshRSS volume, typically `freshrss_data`docker volume ls# Verify the path of your FreshRSS volume, typically `/var/lib/docker/volumes/freshrss_data/`docker volume inspect freshrss_data# Then edit your configuration filesudo nano /var/lib/docker/volumes/freshrss_data/_data/config.phpDocker ComposeFirst, put variables such as passwords in your .env file (see example.env):[email protected]_PASSWORD=freshrssADMIN_API_PASSWORD=freshrss# Published port if running locallyPUBLISHED_PORT=8080# Database credentials (not relevant if using default SQLite database)DB_HOST=freshrss-dbDB_BASE=freshrssDB_PASSWORD=freshrssDB_USER=freshrssSee docker-compose.ymlcd ./FreshRSS/Docker/freshrss/# Updatedocker-compose pull# Rundocker-compose -f docker-compose.yml -f docker-compose-local.yml up -d --remove-orphans# Logsdocker-compose logs -f --timestamps# Stopdocker-compose down --remove-orphansDetailed (partial) example of Docker Compose for FreshRSS:version: "2.4"volumes: data: extensions:services: freshrss: image: freshrss/freshrss:edge container_name: freshrss restart: unless-stopped logging: options: max-size: 10m volumes: - data:/var/www/FreshRSS/data # Optional volume for storing third-party extensions - extensions:/var/www/FreshRSS/extensions # Optional file providing custom global settings (used before a FreshRSS install) - ./config.custom.php:/var/www/FreshRSS/data/config.custom.php # Optional file providing custom user settings (used before a new user is created) - ./config-user.custom.php:/var/www/FreshRSS/data/config-user.custom.php ports: # If you want to open a port 8080 on the local machine: - "8080:80" environment: TZ: Europe/Paris CRON_MIN: '2,32' FRESHRSS_ENV: development # Optional advanced parameter controlling the internal Apache listening port LISTEN: 0.0.0.0:80 # Optional auto-install parameters (the Web interface install is recommended instead): # ⚠️ Parameters below are only used at the very first run (so far). # So if changes are made (or in .env file), first delete the service and volumes. # ℹ️ All the --db-* parameters can be omitted if using built-in SQLite database. FRESHRSS_INSTALL: |- --api_enabled --base_url ${BASE_URL} --db-base ${DB_BASE} --db-host ${DB_HOST} --db-password ${DB_PASSWORD} --db-type pgsql --db-user ${DB_USER} --default_user admin --language en FRESHRSS_USER: |- --api_password ${ADMIN_API_PASSWORD} --email ${ADMIN_EMAIL} --language en --password ${ADMIN_PASSWORD} --user adminDocker Compose with PostgreSQLExample including a PostgreSQL database.See docker-compose-db.ymlcd ./FreshRSS/Docker/freshrss/# Updatedocker-compose -f docker-compose.yml -f docker-compose-db.yml pull# Rundocker-compose -f docker-compose.yml -f docker-compose-db.yml -f docker-compose-local.yml up -d --remove-orphans# Logsdocker-compose -f docker-compose.yml -f docker-compose-db.yml logs -f --timestampsDocker Compose for developmentUse the local (git) FreshRSS source code instead of the one inside the Docker container, to avoid having to rebuild/restart at each change in the source code.See docker-compose-development.ymlcd ./FreshRSS/Docker/freshrss/# Updategit pull --ff-only --prunedocker-compose pull# Rundocker-compose -f docker-compose-development.yml -f docker-compose.yml -f docker-compose-local.yml up --remove-orphans# Stop with + and purgedocker-compose down --remove-orphans --volumesℹ️ You can combine it with -f docker-compose-db.yml to spin a PostgreSQL database.Run in productionFor production, it is a good idea to use a reverse proxy on your host server, providing HTTPS. A dedicated solution such as Træfik is recommended (or see alternative options below).You must first chose a domain (DNS) or sub-domain, e.g. freshrss.example.net, and set it in your .env file:SERVER_DNS=freshrss.example.netUse Træfik reverse proxyHere is the recommended configuration using automatic Let’s Encrypt HTTPS certificates and with a redirection from HTTP to HTTPS.See docker-compose-proxy.ymlcd ./FreshRSS/Docker/freshrss/# Updatedocker-compose -f docker-compose.yml -f docker-compose-proxy.yml pull# Rundocker-compose -f docker-compose.yml -f docker-compose-proxy.yml up -d --remove-orphans# Logsdocker-compose -f docker-compose.yml -f docker-compose-proxy.yml logs -f --timestamps# Stopdocker-compose -f docker-compose.yml -f docker-compose-proxy.yml down --remove-orphansℹ️ You can combine it with -f docker-compose-db.yml to spin a PostgreSQL database.See more information about Docker and Let’s Encrypt in Træfik.Alternative reverse proxy configurationsAlternative reverse proxy using ApacheHere is an example of a configuration file for running FreshRSS behind an Apache 2.4 reverse proxy (as a subdirectory). Read the full article

[revold--blog]

How to Install and Configure Radarr on Linux Using Docker

Radarr is a movie collection manager for Usenet and BitTorrent users, designed as a fork of Sonarr. It automates movie downloading, organizing, and renaming while integrating with download clients.This guide explains how to install Radarr using Docker and Docker Compose for a seamless setup on Linux-based systems.Step 1: Install Docker and Docker ComposeBefore installing Radarr, ensure Docker and Docker Compose are installed.Install DockerUpdate system packages:sudo apt update && sudo apt upgrade -yInstall required dependencies:sudo apt install -y apt-transport-https ca-certificates curl software-properties-commonAdd Docker’s official GPG key:curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpgAdd the Docker repository:echo "deb https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/nullInstall Docker:sudo apt updatesudo apt install -y docker-ce docker-ce-cli containerd.ioVerify installation:docker --versionInstall Docker ComposeDownload the latest release:sudo curl -L "https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-composeSet executable permissions:sudo chmod +x /usr/local/bin/docker-composeVerify installation:docker-compose --versionStep 2: Create Radarr Configuration DirectoryCreate a directory for Radarr’s configuration and data:mkdir -p ~/docker/radarrStep 3: Deploy Radarr Using Docker ComposeCreate and open a new docker-compose.yml file:nano ~/docker/radarr/docker-compose.ymlAdd the following configuration:version: "3.8"services:radarr:image: lscr.io/linuxserver/radarr:latestcontainer_name: radarrrestart: unless-stoppedports:- 7878:7878environment:- PUID=1000- PGID=1000- TZ=America/New_Yorkvolumes:- ~/docker/radarr/config:/config- /path/to/movies:/movies- /path/to/downloads:/downloadsReplace /path/to/movies and /path/to/downloads with the actual directories where your media and downloads are stored.Save and exit the file (CTRL+X, then Y and Enter).Step 4: Start RadarrNavigate to the Radarr directory:cd ~/docker/radarrRun Radarr using Docker Compose:docker-compose up -dTo check the running container:docker psStep 5: Access Radarr Web InterfaceOpen your browser and go to:http://your-server-ip:7878You can now configure Radarr by adding a movie folder, setting up download clients, and automating your movie library.Step 6: Updating RadarrTo update Radarr manually, stop and remove the container:docker-compose downPull the latest image:docker-compose pullRestart Radarr with the new version:docker-compose up -dConclusionYou have successfully installed Radarr using Docker on a Linux server. This setup ensures easy updates, better security, and isolated configurations.Would you like help with integrating Radarr with Sonarr, Plex, or a torrent client? Let me know! 🚀 Read the full article

[revold--blog]

Using Docker to Set up Nginx Reverse Proxy With Auto SSL Generation

What is reverse proxy? What are its advantages?What is a reverse proxy? Reverse proxy is kind of a server that sits in the front of many other servers, and forwards the client requests to the appropriate servers. The response from the server is then also received and forwarded by the proxy server to the client.Why would you use such a setup? There are several good reasons for that. This setup can be used to set up a load balancer, caching or for protection from attacks.I am not going into the details here. Instead, I’ll show you how you can utilize the concept of reverse proxy to set up multiple services on the same server.Take the same image as the one you saw above. What you can do is to run an Ngnix server in a docker container in reverse proxy mode. Other web services can also be run in their own respective containers.Nginx container will be configured in a way that it knows which web service is running in which container.This is a good way to save cost of hosting each service in a different server. You can have multiple services running in the same Linux server thanks to the reverse proxy server.Setting up Nginx as reverse proxy to deploy multiple services on the same server using DockerLet me show you how to go about configuring the above mentioned setup.With these steps, you can install multiple web-based application containers running under Nginx with each standalone container corresponding to its own respective domain or subdomain.First, let’s see what you need in order to follow this tutorial.PrerequisitesYou’ll be needing the following knowledge to get started with this tutorial easily. Althogh, you can get by without them as well.- A Linux system/server. You can easily deploy a Linux server in minutes using Linode cloud service.- Familiarity with Linux commands and terminal.- Basic knowledge of Docker.- You should have Docker and Docker Compose installed on your Linux server. Please read our guide on installing Docker and Docker Compose on CentOS.- You should also own a domain (so that you can set up services on sub-domains).I have used domain.com as an example domain name in the tutorial. Please make sure you change it according to your own domains or subdomains.Other than the above, please also make sure of the following things:Change your domain’s DNS recordsIn your domain name provider’s A/AAAA or CNAME record panel, make sure that both the domain and subdomains (including www) point to your server’s IP address.This is an example for your reference:HostnameIP AddressTTLdomain.com172.105.50.178Default*172.105.50.178Defaultsub0.domain.com172.105.50.178Defaultsub1.domain.com172.105.50.178DefaultSwap spaceTo make sure all your container apps are at ease and never run out of memory after you deploy them, you must have the necessary swap space on your system.You can always adjust swap according to the available RAM on your system. You can decide the swap space based on the bundle of app containers on the single server and estimating their cumulative RAM usage.Before we start, please follow our channel and do not forget to clap. 👏 this is really help to promote our contentStep 1: Set up Nginx reverse proxy containerStart with setting up your nginx reverse proxy. Create a directory named “reverse-proxy” and switch to it:mkdir reverse-proxy && cd reverse-proxyCreate a file named docker-compose.yml, open it in your favourite terminal-based text editor like Vim or Nano.For the nginx reverse proxy, I’ll be using jwilder/nginx-proxy image. Copy and paste the following in the docker-compose.yml file:version: "3.7"services: reverse-proxy: image: "jwilder/nginx-proxy:latest" container_name: "reverse-proxy" volumes: - "html:/usr/share/nginx/html" - "dhparam:/etc/nginx/dhparam" - "vhost:/etc/nginx/vhost.d" - "certs:/etc/nginx/certs" - "/run/docker.sock:/tmp/docker.sock:ro" restart: "always" networks: - "net" ports: - "80:80" - "443:443"Now let’s go through the important parts of the compose file:- You have declared four volumes, html, dhparam, vhost and certs. They’re persistent data that you’d definitely want to keep even after the container’s been down. The html & vhost volumes will be very important in the next Let's Encrypt container deployment. They're designed to work together.- The docker socker is mounted read-only inside the container. This one’s necessary for the reverse proxy container to generate nginx’s configuration files, detect other containers with a specific environment variable.- Docker restart policy is set to always. Other options include on-failure and unless-stopped. In this case, always seemed more appropriate.- The ports 80 and 443 are bound to the host for http and https respectively.- Finally, it uses a different network, not the default bridge network.Using a user defined network is very important. This will help in isolating all the containers that are to be proxied, along with enabling the reverse proxy container to forward the clients to their desired/intended containers and also let the containers communicate with each other (Which is not possible with the default bridge network unless icc is set to true for the daemon).Keep in mind that YML is very finicky about tabs and indention.Step 2: Set up a container for automatic SSL certificate generationFor this, you can using jrcs/letsencrypt-nginx-proxy-companion container image.On the same docker-compose.yml file that you used before, add the following lines:letsencrypt: image: "jrcs/letsencrypt-nginx-proxy-companion:latest" container_name: "letsencrypt-helper" volumes: - "html:/usr/share/nginx/html" - "dhparam:/etc/nginx/dhparam" - "vhost:/etc/nginx/vhost.d" - "certs:/etc/nginx/certs" - "/run/docker.sock:/var/run/docker.sock:ro" environment: NGINX_PROXY_CONTAINER: "reverse-proxy" DEFAULT_EMAIL: "[email protected]" restart: "always" depends_on: - "reverse-proxy" networks: - "net"In this service definition:- You’re using the same exact volumes as you used for the reverse-proxy container. The html and vhost volumes sharing are necessary for the ACME Challenge of letsencrypt to be successful. This container will generate the certificates inside /etc/nginx/certs, in the container. This is why you are sharing this volume with your reverse proxy container. The dhparam volume will contain the dhparam file. The socket is mounted to detect other containers with a specific environment variable.- Here you have defined two environment variables. The NGINX_PROXY_CONTAINER variable points to the reverse proxy container. Set it to the name of the container. The DEFAULT_EMAIL is the email that'll be used while generating the certificates for each domain/subdomain.- The depends_on option is set so that this service waits for the reverse proxy to start first, then and only then, this'll start.- Finally, this container also shares the same network. This is necessary for the two containers to communicate.Step 3: Finalize the docker compose fileOnce the service definitions are done, complete the docker-compose file with the following lines:volumes: certs: html: vhost: dhparam:networks: net: external: trueThe network net is set to external because the proxied containers will also have to use this network. And if we leave the network to get created by docker-comspose, the network name will depend on the current directory. This will create a weirdly named network.Other than that, other containers will have to set that network to be external anyway, otherwise those compose files will also have to reside in this same directory, none of which is ideal.Therefore, create the network usingdocker network create netThe following is the whole content of the docker-compose.yml file.version: "3.7"services: reverse-proxy: image: "jwilder/nginx-proxy:latest" container_name: "reverse-proxy" volumes: - "html:/usr/share/nginx/html" - "dhparam:/etc/nginx/dhparam" - "vhost:/etc/nginx/vhost.d" - "certs:/etc/nginx/certs" - "/run/docker.sock:/tmp/docker.sock:ro" restart: "always" networks: - "net" ports: - "80:80" - "443:443" letsencrypt: image: "jrcs/letsencrypt-nginx-proxy-companion:latest" container_name: "letsencrypt-helper" volumes: - "html:/usr/share/nginx/html" - "dhparam:/etc/nginx/dhparam" - "vhost:/etc/nginx/vhost.d" - "certs:/etc/nginx/certs" - "/run/docker.sock:/var/run/docker.sock:ro" environment: NGINX_PROXY_CONTAINER: "reverse-proxy" DEFAULT_EMAIL: "[email protected]" restart: "always" depends_on: - "reverse-proxy" networks: - "net"volumes: certs: html: vhost: dhparam:networks: net: external: trueFinally, you can deploy these two containers (Ngnix and Let’s Encrypt) using the following command:docker-compose up -dStep 4: Verify that Ngnix reverse proxy is workingThe container that’ll serve the frontend will need to define two environment variables.VIRTUAL_HOST: for generating the reverse proxy configLETSENCRYPT_HOST: for generating the necessary certificatesMake sure that you have correct values for these two variables. You can run nginx-dummy image with reverse proxy like this:docker run --rm --name nginx-dummy -e VIRTUAL_HOST=sub.domain.com -e LETSENCRYPT_HOST=sub.domain.com -e VIRTUAL_PORT=80 --network net -d nginx:latestNow if you go to your sub-domain used in the previous command, you should see a message from Ngnix server.Once you have successfully tested it, you can stop the running docker container:docker stop nginx-dummyYou may also stop the Ngnix reverse proxy if you are not going to use it:docker-compose downStep 5: Run other service containers with reverse proxyThe process of setting up other containers so that they can be proxied is VERY simple.I’ll show it with two instances of Nextcloud deployment in a moment. Let me first tell you what you are doing here.Do not bind to any portThe container can leave out the port that serves the frontend. The reverse proxy container will automatically detect that.(OPTIONAL) Define VIRTUAL_PORTIf the reverse proxy container fails to detect the port, you can define another environment variable named VIRTUAL_PORT with the port serving the frontend or whichever service you want to get proxied, like "80" or "7765".Set Let’s Encrypt email specific to a containerYou can override the DEFAULT_EMAIL variable and set a specific email address for a specific container/web service's domain/subdomain certificate(s), by setting the email id to the environment variable LETSENCRYPT_EMAIL. This works on a per-container basis.Now that you know all those stuff, let me show you the command that deploys a Nextcloud instance that’ll be proxied using the nginx proxy container, and will have TLS(SSL/HTTPS) enabled.This is NOT AN IDEAL deployment. The following command is used for demonstrative purpose only.docker run --name nextcloud --network net -e VIRTUAL_HOST="sub0.domain.com" -e LETSENCRYPT_HOST="sub0.domain.com" -d nextcloud:19.0.2In the example, you used the same network as the reverse proxy containers, defined the two environment variables, with the appropriate subdomains (Set yours accordingly). After a couple of minutes, you should see Nextcloud running on sub0.domain.com. Open it in a browser to verify.You can deploy another Nextcloud instance just like this one, on a different subdomain, like the following:docker run --name anothernextcloud --network net -e VIRTUAL_HOST="sub1.domain.com" -e LETSENCRYPT_HOST="sub1.domain.com" -d nextcloud:19.0.2Now you should see a different Nextcloud instance running on a different subdomain on the same server.With this method, you can deploy different web apps on the same server served under different subdomains, which is pretty handy. Read the full article

[revold--blog]

Read the full article

[revold--blog]

Crypto Finance: Comprehensive Guide to Technical Analysis

Technical analysis (TA) is a powerful tool used in crypto trading to forecast future price movements based on historical price data, trading volume, and market behavior. Unlike fundamental analysis, which evaluates a project's intrinsic value, technical analysis focuses purely on price charts, patterns, and indicators.In this guide, you will learn how to conduct deep technical analysis for cryptocurrencies, identify trends, use indicators, and build a strong trading strategy.1. Basics of Technical AnalysisTechnical analysis is built on three main principles:- Market Discounts Everything – All known information is reflected in the price.- Price Moves in Trends – Prices follow trends rather than moving randomly.- History Repeats Itself – Market patterns repeat due to trader psychology.1.1 Types of Charts Used in Crypto TA- Line Chart – Simple representation of price movement over time.- Bar Chart – Displays opening, closing, high, and low prices per time interval.- Candlestick Chart (most used) – Shows price movement with detailed visualization.Each candlestick has four components:- Open Price – The price at the beginning of a time frame.- Close Price – The price at the end of the time frame.- High Price – The highest price reached.- Low Price – The lowest price reached.2. Identifying Market TrendsA trend is the general direction of a crypto asset’s price movement over a period of time.2.1 Types of Market Trends- Uptrend (Bullish) – A series of higher highs and higher lows.- Downtrend (Bearish) – A series of lower highs and lower lows.- Sideways (Range-Bound) – When price consolidates within a horizontal range.2.2 TrendlinesA trendline connects key price levels and helps to define the trend:- Uptrend Line – Drawn along rising lows.- Downtrend Line – Drawn along falling highs.2.3 Support & Resistance- Support – A price level where demand is strong enough to prevent further decline.- Resistance – A price level where selling pressure prevents further rise.Once broken, support can turn into resistance, and resistance can turn into support.3. Key Technical IndicatorsTechnical indicators help confirm trends and generate trade signals.3.1 Moving Averages (MA)MAs smooth out price action to identify trends:- Simple Moving Average (SMA) – The average price over a set period.- Exponential Moving Average (EMA) – Similar to SMA but gives more weight to recent prices.Common settings:- Short-term: 9, 21-day MAs (used for quick trades).- Medium-term: 50-day MA (used for trend confirmation).- Long-term: 200-day MA (used for major trend reversals).Golden Cross – When a short-term MA crosses above a long-term MA (bullish signal).Death Cross – When a short-term MA crosses below a long-term MA (bearish signal).3.2 Relative Strength Index (RSI)RSI measures momentum on a scale of 0 to 100.- Above 70 – Overbought (price may correct).- Below 30 – Oversold (price may rebound).Divergences:- Bullish Divergence – Price makes lower lows, but RSI makes higher lows → Possible reversal upward.- Bearish Divergence – Price makes higher highs, but RSI makes lower highs → Possible reversal downward.3.3 MACD (Moving Average Convergence Divergence)MACD consists of:- MACD Line (fast-moving line).- Signal Line (slow-moving line).- Histogram (difference between MACD and Signal line).When MACD crosses above the Signal line → Buy SignalWhen MACD crosses below the Signal line → Sell Signal3.4 Bollinger BandsBollinger Bands consist of:- Middle Band (SMA)- Upper Band (+2 Standard Deviations)- Lower Band (-2 Standard Deviations)When price touches upper band → Overbought (potential reversal).When price touches lower band → Oversold (potential bounce).4. Chart Patterns & Candlestick FormationsPatterns help traders anticipate price movements based on historical behavior.4.1 Common Chart Patterns- Ascending Triangle – Bullish breakout pattern.- Descending Triangle – Bearish breakdown pattern.- Head and Shoulders – Bearish reversal pattern.- Inverse Head and Shoulders – Bullish reversal pattern.- Double Top – Bearish pattern indicating a strong resistance.- Double Bottom – Bullish pattern indicating strong support.4.2 Candlestick Patterns- Bullish Engulfing – A strong bullish reversal signal.- Bearish Engulfing – A strong bearish reversal signal.- Doji – Indicates market indecision.- Hammer – Bullish reversal pattern after a downtrend.- Shooting Star – Bearish reversal pattern after an uptrend.5. Volume AnalysisVolume measures the strength of a price move.5.1 High Volume Signals- Uptrend with high volume → Strong bullish move.- Downtrend with high volume → Strong bearish move.- Breakout with high volume → Confirmation of trend continuation.5.2 Low Volume Signals- Uptrend with low volume → Weak rally, potential reversal.- Downtrend with low volume → Weak sell-off, potential bounce.6. Risk Management & Trading Strategy6.1 Setting Stop-Loss & Take-Profit- Stop-Loss – Protects against major losses.- Take-Profit – Ensures gains are locked in before reversals.Common risk-reward ratio: 1:2 or 1:3 (risking $100 to gain $200 or $300).6.2 Position Sizing- Never risk more than 1-2% of total capital on a single trade.- Diversify holdings to reduce risk exposure.6.3 Trading Psychology- Avoid FOMO (Fear of Missing Out).- Control emotions and stick to a strategy.- Use a trading journal to improve decision-making.7. Combining Technical & Fundamental AnalysisWhile technical analysis helps predict short-term price movements, fundamental analysis provides insight into a project’s long-term value.Key fundamental factors to consider:- Project team & partnerships- Roadmap & adoption rate- Tokenomics & supply structure- On-chain data (whale activity, transaction volume)7.1 Best Approach: Hybrid Strategy- Use TA for trade timing.- Use FA for long-term investment selection.ConclusionTechnical analysis is a vital skill for crypto traders, allowing them to make informed trading decisions. Mastering trends, indicators, patterns, and volume will help you identify profitable opportunities while managing risks effectively.Start practicing by analyzing Bitcoin or altcoins on TradingView and refining your TA skills! Read the full article

[revold--blog]

Install Home Assistant Operating System

DOWNLOAD THE APPROPRIATE IMAGE- VirtualBox (.vdi)- KVM (.qcow2)- Vmware Workstation (.vmdk)Follow this guide if you already are running a supported virtual machine hypervisor. If you are not familiar with virtual machines we recommend installation Home Assistant OS directly on a Raspberry Pi or an ODROID.CREATE THE VIRTUAL MACHINELoad the appliance image into your virtual machine hypervisor. (Note: You are free to assign as much resources as you wish to the VM, please assign enough based on your add-on needs).Minimum recommended assignments:- 2 GB RAM- 32 GB Storage- 2vCPUAll these can be extended if your usage calls for more resources.HYPERVISOR SPECIFIC CONFIGURATIONVirtualBoxKVM (virt-manager)KVM (virt-install)Vmware Workstation1. Create a new virtual machine2. Select Type “Linux” and Version “Linux 2.6 / 3.x / 4.x (64-bit)”3. Select “Use an existing virtual hard disk file”, select the unzipped VDI file from above4. Edit the “Settings” of the VM and go “System” then “Motherboard” and select “Enable EFI”5. Then go to “Network” “Adapter 1” choose “Bridged Adapter” and choose your Network adapter.Please keep in mind that the bridged adapter only functions over a hardwired ethernet connection. Using Wi-Fi on your VirtualBox host is unsupported.6. Then go to “Audio” and choose “Intel HD Audio” as Audio Controller.By default VirtualBox does not free up unused disk space. To automatically shrink the vdi disk image the discard option must be enabled:VBoxManage storageattach — storagectl “SATA” — port 0 — device 0 — nonrotational on — discard onSTART UP YOUR VIRTUAL MACHINE1. Start the Virtual Machine2. Observe the boot process of Home Assistant Operating System3. Once completed you will be able to reach Home Assistant on homeassistant.local:8123. If you are running an older Windows version or have a stricter network configuration, you might need to access Home Assistant at homeassistant:8123 or http://X.X.X.X:8123 (replace X.X.X.X with your ’s IP address).With the Home Assistant Operating System installed and accessible you can continue with onboarding.ONBOARDINGInstall Home Assistant ContainerThese below instructions are for an installation of Home Assistant Container running in your own container environment, which you manage yourself. Any OCI compatible runtime can be used, however this guide will focus on installing it with Docker.PrerequisitesThis guide assumes that you already have an operating system setup and a container runtime installed (like Docker).If you are using Docker then you need to be on at least version 19.03.9, ideally an even higher version, and libseccomp 2.4.2 or newer.PLATFORM INSTALLATIONInstallation with Docker is straightforward. Adjust the following command so that:/PATH_TO_YOUR_CONFIG points at the folder where you want to store your configuration and run it.MY_TIME_ZONE is a tz database name, like TZ=America/Los_Angeles.Install & Updatedocker run -d — name homeassistant — privileged — restart=unless-stopped -e TZ=MY_TIME_ZONE -v /PATH_TO_YOUR_CONFIG:/config — network=host ghcr.io/home-assistant/home-assistant:stableOnce the Home Assistant Container is running Home Assistant should be accessible using http://:8123 (replace with the hostname or IP of the system). You can continue with onboarding.ONBOARDINGRESTART HOME ASSISTANTIf you change the configuration you have to restart the server. To do that you have 3 options.In your Home Assistant UI go to the Settings -> System and click the “Restart” button.You can go to the Developer Tools -> Services, select the service homeassistant.restart and click “Call Service”.Restart it from a terminal.docker restart homeassistantdocker compose should already be installed on your system. If not, you can manually install it.As the Docker command becomes more complex, switching to docker compose can be preferable and support automatically restarting on failure or system restart. Create a compose.yml file:version: ‘3’ services: homeassistant: container_name: homeassistant image: “ghcr.io/home-assistant/home-assistant:stable” volumes: — /PATH_TO_YOUR_CONFIG:/config — /etc/localtime:/etc/localtime:ro restart: unless-stopped privileged: true network_mode: hostStart it by running:docker compose up –dOnce the Home Assistant Container is running Home Assistant should be accessible using http://:8123 (replace with the hostname or IP of the system). You can continue with onboarding.EXPOSING DEVICESIn order to use Z-Wave, Zigbee or other integrations that require access to devices, you need to map the appropriate device into the container. Ensure the user that is running the container has the correct privileges to access the /dev/tty* file, then add the device mapping to your container instructions:docker run … — device /dev/ttyUSB0:/dev/ttyUSB0 …OPTIMIZATIONSThe Home Assistant Container is using an alternative memory allocation library jemalloc for better memory management and Python runtime speedup.As jemalloc can cause issues on certain hardware, it can be disabled by passing the environment variable DISABLE_JEMALLOC with any value, for example:docker run … -e “DISABLE_JEMALLOC=true” …The error message : Unsupported system page size is one known indicator.Install Home Assistant CoreThis is an advanced installation process, and some steps might differ on your system. Considering the nature of this installation type, we assume you can handle subtle differences between this document and the system configuration you are using. When in doubt, please consider one of the other installation methods, as they might be a better fit instead.PrerequisitesThis guide assumes that you already have an operating system setup and have installed Python 3.9 (including the package python3-dev) or newer.INSTALL DEPENDENCIESBefore you start, make sure your system is fully updated, all packages in this guide are installed with apt, if your OS does not have that, look for alternatives.sudo apt-get update sudo apt-get upgrade –yInstall the dependencies:sudo apt-get install -y python3 python3-dev python3-venv python3-pip bluez libffi-dev libssl-dev libjpeg-dev zlib1g-dev autoconf build-essential libopenjp2–7 libtiff5 libturbojpeg0-dev tzdataThe above-listed dependencies might differ or missing, depending on your system or personal use of Home Assistant.CREATE AN ACCOUNTAdd an account for Home Assistant Core called homeassistant. Since this account is only for running Home Assistant Core the extra arguments of -rm is added to create a system account and create a home directory.sudo useradd -rm homeassistantCREATE THE VIRTUAL ENVIRONMENTFirst we will create a directory for the installation of Home Assistant Core and change the owner to the homeassistant account.sudo mkdir /srv/homeassistant sudo chown homeassistant:homeassistant /srv/homeassistantNext up is to create and change to a virtual environment for Home Assistant Core. This will be done as the homeassistant account.sudo -u homeassistant -H -s cd /srv/homeassistant python3 -m venv . source bin/activateOnce you have activated the virtual environment (notice the prompt change to (homeassistant) homeassistant@raspberrypi:/srv/homeassistant $) you will need to run the following command to install a required Python package.python3 -m pip install wheelOnce you have installed the required Python package, it is now time to install Home Assistant Core!pip3 install homeassistantStart Home Assistant Core for the first time. This will complete the installation for you, automatically creating the .homeassistant configuration directory in the /home/homeassistant directory, and installing any basic dependencies.hassYou can now reach your installation via the web interface onhttp://homeassistant.local:8123.If this address doesn’t work you may also try http://localhost:8123 or http://X.X.X.X:8123 (replace X.X.X.X with your machines’ IP address).When you run the hass command for the first time, it will download, install and cache the necessary libraries/dependencies. This procedure may take anywhere between 5 to 10 minutes. During that time, you may get “site cannot be reached” error when accessing the web interface. This will only happen for the first time, and subsequent restarts will be much faster. Read the full article

[revold--blog]

How to Install UniFi Controller on Ubuntu 22.04 or 24.04

UniFi is a range of networking products from Ubiquiti, designed for both home and business users. The UniFi Controller is a centralized management system for UniFi access points, switches, security gateways, and cameras.Instead of purchasing a UniFi Cloud Key, you can install the UniFi Controller software on your Ubuntu 22.04 or 24.04 server for free.Step 1: Update Your SystemBefore installing the UniFi Controller, update and upgrade your system.sudo apt update && sudo apt upgrade -yOnce completed, reboot your server.sudo reboot nowStep 2: Install Required DependenciesThe UniFi Controller requires OpenJDK 17 and other dependencies. Install them using:sudo apt install -y openjdk-17-jre-headless gnupg curlVerify Java installation.java -versionStep 3: Add the UniFi Repository1. Import the UniFi GPG Keycurl -fsSL https://dl.ui.com/unifi/unifi-repo.gpg | sudo tee /usr/share/keyrings/unifi-repo.gpg > /dev/null2. Add the UniFi Repositoryecho 'deb https://www.ui.com/downloads/unifi/debian stable main' | sudo tee /etc/apt/sources.list.d/unifi.listUpdate the package list.sudo apt updateStep 4: Install the UniFi ControllerNow, install UniFi Controller.sudo apt install -y unifiStep 5: Start and Enable UniFi ServiceStart the UniFi service.sudo systemctl start unifiEnable UniFi to start on boot.sudo systemctl enable unifiCheck if UniFi is running.sudo systemctl status unifiStep 6: Allow UniFi in the FirewallUniFi requires port 8443 for the web interface. Open the required ports in UFW.sudo ufw allow 8443/tcpsudo ufw allow 3478/udpsudo ufw allow 8080/tcpsudo ufw allow 8880/tcpsudo ufw allow 8843/tcpsudo ufw allow 6789/tcpsudo ufw allow 1900/udpsudo ufw allow 22/tcpEnable the firewall.sudo ufw enableCheck the firewall status.sudo ufw status verboseStep 7: Access the UniFi Web InterfaceOnce the installation is complete, access the UniFi Controller by opening a web browser and entering:https://your-server-ip:8443Since UniFi uses a self-signed SSL certificate, your browser may show a security warning. Click on Advanced → Proceed to the site.Log in using the admin credentials you set during installation.ConclusionYou have successfully installed UniFi Controller on Ubuntu 22.04 or 24.04. Now, you can manage your UniFi network, set up devices, and monitor performance.Would you like help with configuring additional security settings, troubleshooting setup issues, or integrating UniFi with cloud services? Let me know! 🚀 Read the full article

[revold--blog]

What is Swing Trading?Swing trading is a short-to-medium-term trading strategy where traders aim to capture price movements over a few days to weeks. Unlike day traders who close positions within a single day, swing traders hold trades for longer periods to take advantage of market trends and reversals.This strategy works well in both bullish and bearish markets since traders can buy when prices are rising and short-sell when prices are falling.How Swing Trading Works (Step-by-Step)- Identify a Trending Asset- Swing traders look for stocks, cryptocurrencies, or forex pairs that show strong trends or clear support/resistance levels.- Common tools used include moving averages, trend lines, and volume analysis.- Determine Entry Points- Traders often use technical indicators like RSI (Relative Strength Index), MACD (Moving Average Convergence Divergence), and Fibonacci retracement levels to time their entry.- A buy signal might appear when the price bounces off support or breaks out of a resistance level.- Set a Stop-Loss and Take-Profit- Swing traders always define risk by setting a stop-loss (a price level where they will exit if the trade goes against them).- A take-profit level is also set to secure gains once the price reaches a predefined target.- Hold the Trade for Days or Weeks- Unlike day traders, swing traders don't need to monitor charts all day.- They check price action once or twice daily to ensure their trade is progressing as planned.- Exit the Trade When the Target is Reached- If the price reaches the take-profit level, the trade is closed for a gain.- If the price moves against the trader and hits the stop-loss, the trade is exited with a controlled loss.Example of Swing TradingLet’s say Bitcoin (BTC) is trading at $40,000 and a trader identifies that it’s bouncing between $38,000 (support) and $42,000 (resistance).A swing trader might:- Enter a trade at $38,500 when the RSI is oversold.- Set a stop-loss at $37,500 to limit losses.- Set a take-profit target at $41,500 to capture gains.If the price moves as expected, they exit with profit in a few days or weeks. If the price breaks below support, they exit with a small, controlled loss.Pros of Swing Trading✔ Higher profit potential than long-term investing – Captures larger price movements than day trading.✔ Requires less screen time than day trading – You don’t need to monitor charts all day.✔ Works in both bull and bear markets – Traders can profit from both upward and downward trends.✔ Uses technical and fundamental analysis – Can be combined with news events and earnings reports for better decision-making.Cons of Swing Trading⚠ Requires solid technical analysis skills – You need to know how to read charts and indicators.⚠ Not ideal for highly volatile assets – Sudden price spikes (common in crypto) can hit stop-losses prematurely.⚠ Emotional discipline is needed – Holding trades for several days or weeks requires patience.⚠ Overnight risks – Unlike day trading, swing traders are exposed to news events that happen outside market hours.When Should You Use Swing Trading?- If you don’t have time for day trading but want faster results than long-term investing.- If you’re comfortable holding positions for several days or weeks.- If you understand technical analysis and market trends.- If you want to profit from both rising and falling markets.Final Thoughts: Is Swing Trading Right for You?Swing trading offers a balance between short-term trading and long-term investing. It allows traders to capture large price movements without the stress of watching markets 24/7. However, it requires strong technical analysis skills, patience, and risk management to be successful.If you’re willing to learn and manage risk properly, swing trading can be a powerful strategy for generating consistent profits. Read the full article

[revold--blog]

Day Trading – Profiting from Intraday Market Movements

What is Day Trading?Day trading is an active trading strategy where traders buy and sell financial assets within the same trading day. The goal is to capitalize on short-term price movements without holding positions overnight.Day traders focus on highly liquid markets like stocks, forex, and cryptocurrencies, where price fluctuations within a single day can generate quick profits.This strategy requires fast decision-making, technical analysis skills, and risk management, as prices can change rapidly.How Day Trading Works- Identify a Liquid Market- Day traders choose assets with high daily trading volume (e.g., large-cap stocks like Apple, Tesla, or Bitcoin and Ethereum in crypto).- The goal is to trade assets that offer tight bid-ask spreads and minimal slippage.- Use Technical Analysis for Entries and Exits- Day traders rely on chart patterns, technical indicators (RSI, MACD, Bollinger Bands), and price action to determine trade setups.- Common trading techniques include breakouts, momentum trading, and scalping strategies.- Execute Multiple Trades Within the Day- Positions are opened and closed within a few minutes to hours.- Traders often use leverage to amplify gains (but this also increases risk).- Exit Before Market Close- Since day traders avoid overnight risk, all trades are closed before the market session ends.- In crypto, since markets operate 24/7, traders define their trading windows (e.g., morning or afternoon sessions).Example of a Day TradeA trader notices that Tesla (TSLA) stock has broken above a key resistance level at $250 after a strong earnings report.- Entry: The trader buys TSLA at $252 as momentum builds.- Stop-loss: Set at $248 to manage risk.- Take-profit target: $260, where resistance is expected.- Exit: TSLA hits $260 within an hour, and the trader sells for an $8 per share profit.Pros of Day Trading- Potential for quick profits – Traders can make money in minutes or hours rather than waiting for weeks.- No overnight risk – Since all trades are closed daily, traders avoid exposure to overnight market gaps.- High-frequency opportunities – Many stocks, forex pairs, and cryptos offer multiple trade setups daily.- Works in both bull and bear markets – Traders can profit from both rising and falling prices.Cons of Day Trading- High stress and screen time required – Traders must watch charts constantly and react quickly.- Significant capital and leverage risks – Many day traders use margin, which can lead to large losses if trades go wrong.- Frequent transaction costs – More trades mean higher brokerage fees, commissions, and slippage costs.- Psychological pressure – The fast-paced nature of day trading can lead to emotional decision-making and burnout.When Should You Use Day Trading?- If you can dedicate full-time hours to trading and monitor markets actively.- If you are comfortable with fast decision-making under pressure.- If you have a solid understanding of technical analysis and trading psychology.- If you are willing to accept high risk for potential high rewards.Final Thoughts: Is Day Trading Right for You?Day trading can be highly profitable but is also one of the most challenging trading strategies. It requires dedication, discipline, risk management, and market knowledge.For those who enjoy fast-paced trading and quick decision-making, it can be an exciting way to trade. However, for beginners or those who prefer a lower-risk approach, day trading may not be the best choice. Read the full article

[revold--blog]

Hedera (HBAR) is the gold standard for enterprise blockchain in 2025—offering unmatched performance, governance, and real-world integration. Consequently, it has transitioned from promising infrastructure to proven utility across global industries. What sets Hedera apart is its revolutionary Hashgraph consensus—a patented alternative to proof-of-work and proof-of-stake systems. Moreover, this technology provides finality in seconds, mathematically fair transaction ordering, and throughput exceeding 10,000 TPS with predictable, fixed low fees. As a result, it enables businesses to trust Hedera for mission-critical use cases. As the Web3 ecosystem matures and demands institutional-grade scalability, Hedera has emerged as the backbone of blockchain-based identity systems, financial infrastructure, supply chain tracking, and digital asset tokenization. Backed by a growing roster of Fortune 500 companies—including IBM, Google, LG, and Boeing—Hedera is not driven by speculation, but by real adoption and measurable results. Ultimately, it represents the shift from blockchain experimentation to mainstream enterprise deployment.—a patented alternative to proof-of-work and proof-of-stake systems. This technology provides finality in seconds, mathematically fair transaction ordering, and throughput exceeding 10,000 TPS with predictable, fixed low fees. It enables businesses to trust Hedera for mission-critical use cases. As the Web3 ecosystem matures and demands institutional-grade scalability, Hedera has emerged as the backbone of blockchain-based identity systems, financial infrastructure, supply chain tracking, and digital asset tokenization. Backed by a growing roster of Fortune 500 companies—including IBM, Google, LG, and Boeing—Hedera is not driven by speculation, but by real adoption and measurable results. It represents the shift from blockchain experimentation to mainstream enterprise deployment. Why Hedera Stands Out Hedera’s architecture is purpose-built for enterprise adoption. Consequently, it provides performance, governance, and energy efficiency that far surpass typical blockchain protocols. Furthermore, in contrast to more experimental platforms, it stands apart not just as a technical alternative—but as a platform engineered for production-grade implementation. Additionally, this alignment with institutional priorities makes Hedera particularly appealing for high-value, long-term deployments across industries. In fact, it addresses core enterprise demands such as throughput, compliance, cost-efficiency, and sustainability simultaneously—features rarely found together in a single network. - Hashgraph Consensus: Hedera’s patented consensus mechanism—based on asynchronous Byzantine Fault Tolerance (ABFT)—delivers ultra-fast finality, low latency, and over 10,000 transactions per second (TPS) with deterministic outcomes. Unlike blockchains, it doesn’t require mining or block leaders, eliminating bottlenecks and making it ideal for real-time systems. - Enterprise-Grade Governance: Managed by a rotating council of over 30 globally recognized corporations (e.g., Google, IBM, LG, Standard Bank), Hedera ensures global neutrality, legal compliance, and long-term stability. Each member governs through transparent voting, reducing centralization risk. - Fixed Low Fees: Transactions cost less than a fraction of a cent and are predictable. Whether executing smart contracts, issuing tokens, or storing data, businesses benefit from cost certainty—critical for financial planning and service-level guarantees. - Eco-Friendly Infrastructure: In an era of ESG mandates, Hedera is carbon-negative by design. Its proof-of-stake efficiency and carbon offsetting strategy make it one of the most sustainable distributed ledgers for environmentally conscious partners. Together, these attributes position Hedera as the go-to infrastructure layer for enterprises building real-world, regulatory-compliant, high-performance Web3 solutions. Where Hedera Adds Real Value Hedera delivers exceptional utility in environments that demand performance, compliance, and trust. As a result, it is becoming a go-to infrastructure choice for mission-critical applications. Moreover, its real-world usage across industries demonstrates both scalability and institutional confidence. It’s being actively deployed in: - Government infrastructure, for secure digital identity systems, land registries, and interagency coordination tools. - Finance and banking, where Hedera enables instant FX settlement, predictable micropayment rails, and regulatory-compliant token issuance. - ESG and climate markets, offering platforms for verifiable carbon credit tracking, offset trading, and sustainability certifications. - IoT and edge computing, where devices use Hedera’s low-fee architecture for automated machine-to-machine transactions. - Digital content platforms, facilitating real-time royalty distribution and per-use content monetization without intermediaries. These high-impact use cases prove that Hedera is not an experimental network—it's a production-grade solution trusted by governments, Fortune 500s, and mission-critical service providers. Real-World Use Cases in 2025 - CBDCs & Government: Multiple pilot programs are running on Hedera for public sector digital currencies, ID systems, and interagency communication. - Supply Chain & Provenance: Corporations are using HBAR to track product authenticity, carbon offsets, and logistics data with verifiable transparency. - Tokenization of Assets: Real estate, carbon credits, and corporate equities are being tokenized on Hedera using its native HTS (Hedera Token Service). - Micropayments & IoT: Hedera's speed and low fees make it ideal for machine-to-machine transactions, streaming content payments, and smart city automation. - DeFi & Stablecoins: Protocols are launching DeFi primitives and region-specific stablecoins using Hedera’s predictable fee structure and enterprise compliance support. Technical Outlook (as of Today) Hedera (HBAR) is currently trading near $0.10, showing signs of gradual accumulation after forming a multi-month base. Technical indicators suggest strengthening momentum and rising interest from long-term investors. - Price: $0.10 (approx.) - Trend: Stable upward trend with gradual accumulation and low volatility—indicative of early-stage recovery - Support Levels: $0.088 (short-term), $0.072 (macro trend floor) - Resistance Levels: $0.118 (minor breakout zone), $0.135 (strong resistance from Q3 2024) - Momentum Indicators: RSI hovering near 52—neutral with slight upward bias; MACD line above signal, indicating growing bullish divergence; volume gradually rising with healthy accumulation patterns Should HBAR close above the $0.118 resistance with strong volume confirmation, technical analysts expect a short- to mid-term rally targeting $0.135–$0.16. However, failure to hold the $0.088 support may see a pullback to re-accumulate near $0.072. Current technical sentiment leans cautiously optimistic. Price Forecast: 2025–2027 Hedera's price outlook is anchored in its consistent enterprise adoption, breakthrough in real-world tokenization, and strong governance structure. As more institutions seek performance, compliance, and ESG-aligned infrastructure, HBAR becomes increasingly positioned as a long-term utility asset—not a speculative token. 2025 - Baseline Forecast: $0.13 – $0.18Supported by expanded adoption in digital ID programs, carbon credit markets, and early-stage DeFi growth. - Bullish Scenario: $0.25 – $0.30If governments begin production deployments of CBDCs or identity solutions built on Hedera, and Fortune 500 integrations move from pilot to production scale. 2026 - Baseline Forecast: $0.20 – $0.30Driven by stablecoin growth, tokenization of real-world assets, and increased adoption of Smart Contract 2.0 with EVM compatibility. - Bullish Scenario: $0.42 – $0.50If Hedera becomes a preferred platform for ESG-compliant tokenization and begins securing FX infrastructure in emerging markets. 2027 - Baseline Forecast: $0.28 – $0.40Reflecting maturity in DeFi, DID frameworks, and treasury infrastructure adoption. - Bullish Scenario: $0.60 – $0.85In the case of global CBDC interoperability use cases, enterprise-grade DeFi liquidity migration, or significant DAO and DID infrastructure anchoring to HBAR. These forecasts highlight Hedera’s upside as real-world systems begin shifting from centralized cloud-based models to auditable, low-latency distributed networks. Hedera’s success is tied not to hype—but to regulated utility. Roadmap Highlights Hedera’s 2025–2026 roadmap is focused on unlocking broader programmability, enterprise-grade identity integration, and cross-network connectivity—all while maintaining its efficiency and compliance-oriented architecture: - Smart Contract 2.0: Bringing full EVM compatibility to Hedera, allowing developers to deploy Solidity-based smart contracts with optimized gas usage and high throughput for scalable DeFi applications. - Decentralized Identity (DID): Expansion of decentralized identity solutions through global partnerships. Hedera will support DID frameworks for KYC, credential issuance, and government-grade digital identity infrastructure. - Real-Time Settlement Layer: Development of ultra-low-latency payment infrastructure enabling FX clearing, treasury reconciliation, and CBDC transaction support in milliseconds. - Interoperability Bridges: Building native bridges with Ethereum, Cosmos, Solana, and other major networks to facilitate secure token and data exchange across Web3 ecosystems. - Token Service Enhancements (HTS++): New features include compliance tagging, transfer hooks for conditional logic, event triggers, and expanded token programmability—all designed to make HTS a global standard for institutional-grade asset issuance. These initiatives demonstrate Hedera’s commitment to becoming the most production-ready, interoperable, and programmable public ledger for regulated and enterprise-scale deployments. Final Thoughts Hedera is not just another blockchain—it's the technological backbone for the next generation of enterprise infrastructure. In 2025, it is delivering what most platforms still promise: regulatory-grade performance, institutional trust, and real-world impact. HBAR is no longer defined by potential but by proof. It's being deployed to modernize national identity systems, optimize global supply chains, automate public registries, and tokenize everything from carbon credits to corporate shares. With a council of world-renowned organizations, unmatched throughput, and environmentally responsible design, Hedera stands as the most viable platform for public-private sector convergence in the digital era. As Web3 matures and demands scalable, compliant, and sustainable architecture, Hedera is not only ready—but already embedded. It is the future of digital infrastructure in motion. 🔗 Learn more at: https://hedera.com Read the full article

[revold--blog]

Hedera (HBAR) is the gold standard for enterprise blockchain in 2025—offering unmatched performance, governance, and real-world integration. Consequently, it has transitioned from promising infrastructure to proven utility across global industries. What sets Hedera apart is its revolutionary Hashgraph consensus—a patented alternative to proof-of-work and proof-of-stake systems. Moreover, this technology provides finality in seconds, mathematically fair transaction ordering, and throughput exceeding 10,000 TPS with predictable, fixed low fees. As a result, it enables businesses to trust Hedera for mission-critical use cases. As the Web3 ecosystem matures and demands institutional-grade scalability, Hedera has emerged as the backbone of blockchain-based identity systems, financial infrastructure, supply chain tracking, and digital asset tokenization. Backed by a growing roster of Fortune 500 companies—including IBM, Google, LG, and Boeing—Hedera is not driven by speculation, but by real adoption and measurable results. Ultimately, it represents the shift from blockchain experimentation to mainstream enterprise deployment.—a patented alternative to proof-of-work and proof-of-stake systems. This technology provides finality in seconds, mathematically fair transaction ordering, and throughput exceeding 10,000 TPS with predictable, fixed low fees. It enables businesses to trust Hedera for mission-critical use cases. As the Web3 ecosystem matures and demands institutional-grade scalability, Hedera has emerged as the backbone of blockchain-based identity systems, financial infrastructure, supply chain tracking, and digital asset tokenization. Backed by a growing roster of Fortune 500 companies—including IBM, Google, LG, and Boeing—Hedera is not driven by speculation, but by real adoption and measurable results. It represents the shift from blockchain experimentation to mainstream enterprise deployment. Why Hedera Stands Out Hedera’s architecture is purpose-built for enterprise adoption. Consequently, it provides performance, governance, and energy efficiency that far surpass typical blockchain protocols. Furthermore, in contrast to more experimental platforms, it stands apart not just as a technical alternative—but as a platform engineered for production-grade implementation. Additionally, this alignment with institutional priorities makes Hedera particularly appealing for high-value, long-term deployments across industries. In fact, it addresses core enterprise demands such as throughput, compliance, cost-efficiency, and sustainability simultaneously—features rarely found together in a single network. - Hashgraph Consensus: Hedera’s patented consensus mechanism—based on asynchronous Byzantine Fault Tolerance (ABFT)—delivers ultra-fast finality, low latency, and over 10,000 transactions per second (TPS) with deterministic outcomes. Unlike blockchains, it doesn’t require mining or block leaders, eliminating bottlenecks and making it ideal for real-time systems. - Enterprise-Grade Governance: Managed by a rotating council of over 30 globally recognized corporations (e.g., Google, IBM, LG, Standard Bank), Hedera ensures global neutrality, legal compliance, and long-term stability. Each member governs through transparent voting, reducing centralization risk. - Fixed Low Fees: Transactions cost less than a fraction of a cent and are predictable. Whether executing smart contracts, issuing tokens, or storing data, businesses benefit from cost certainty—critical for financial planning and service-level guarantees. - Eco-Friendly Infrastructure: In an era of ESG mandates, Hedera is carbon-negative by design. Its proof-of-stake efficiency and carbon offsetting strategy make it one of the most sustainable distributed ledgers for environmentally conscious partners. Together, these attributes position Hedera as the go-to infrastructure layer for enterprises building real-world, regulatory-compliant, high-performance Web3 solutions. Where Hedera Adds Real Value Hedera delivers exceptional utility in environments that demand performance, compliance, and trust. As a result, it is becoming a go-to infrastructure choice for mission-critical applications. Moreover, its real-world usage across industries demonstrates both scalability and institutional confidence. It’s being actively deployed in: - Government infrastructure, for secure digital identity systems, land registries, and interagency coordination tools. - Finance and banking, where Hedera enables instant FX settlement, predictable micropayment rails, and regulatory-compliant token issuance. - ESG and climate markets, offering platforms for verifiable carbon credit tracking, offset trading, and sustainability certifications. - IoT and edge computing, where devices use Hedera’s low-fee architecture for automated machine-to-machine transactions. - Digital content platforms, facilitating real-time royalty distribution and per-use content monetization without intermediaries. These high-impact use cases prove that Hedera is not an experimental network—it's a production-grade solution trusted by governments, Fortune 500s, and mission-critical service providers. Real-World Use Cases in 2025 - CBDCs & Government: Multiple pilot programs are running on Hedera for public sector digital currencies, ID systems, and interagency communication. - Supply Chain & Provenance: Corporations are using HBAR to track product authenticity, carbon offsets, and logistics data with verifiable transparency. - Tokenization of Assets: Real estate, carbon credits, and corporate equities are being tokenized on Hedera using its native HTS (Hedera Token Service). - Micropayments & IoT: Hedera's speed and low fees make it ideal for machine-to-machine transactions, streaming content payments, and smart city automation. - DeFi & Stablecoins: Protocols are launching DeFi primitives and region-specific stablecoins using Hedera’s predictable fee structure and enterprise compliance support. Technical Outlook (as of Today) Hedera (HBAR) is currently trading near $0.10, showing signs of gradual accumulation after forming a multi-month base. Technical indicators suggest strengthening momentum and rising interest from long-term investors. - Price: $0.10 (approx.) - Trend: Stable upward trend with gradual accumulation and low volatility—indicative of early-stage recovery - Support Levels: $0.088 (short-term), $0.072 (macro trend floor) - Resistance Levels: $0.118 (minor breakout zone), $0.135 (strong resistance from Q3 2024) - Momentum Indicators: RSI hovering near 52—neutral with slight upward bias; MACD line above signal, indicating growing bullish divergence; volume gradually rising with healthy accumulation patterns Should HBAR close above the $0.118 resistance with strong volume confirmation, technical analysts expect a short- to mid-term rally targeting $0.135–$0.16. However, failure to hold the $0.088 support may see a pullback to re-accumulate near $0.072. Current technical sentiment leans cautiously optimistic. Price Forecast: 2025–2027 Hedera's price outlook is anchored in its consistent enterprise adoption, breakthrough in real-world tokenization, and strong governance structure. As more institutions seek performance, compliance, and ESG-aligned infrastructure, HBAR becomes increasingly positioned as a long-term utility asset—not a speculative token. 2025 - Baseline Forecast: $0.13 – $0.18Supported by expanded adoption in digital ID programs, carbon credit markets, and early-stage DeFi growth. - Bullish Scenario: $0.25 – $0.30If governments begin production deployments of CBDCs or identity solutions built on Hedera, and Fortune 500 integrations move from pilot to production scale. 2026 - Baseline Forecast: $0.20 – $0.30Driven by stablecoin growth, tokenization of real-world assets, and increased adoption of Smart Contract 2.0 with EVM compatibility. - Bullish Scenario: $0.42 – $0.50If Hedera becomes a preferred platform for ESG-compliant tokenization and begins securing FX infrastructure in emerging markets. 2027 - Baseline Forecast: $0.28 – $0.40Reflecting maturity in DeFi, DID frameworks, and treasury infrastructure adoption. - Bullish Scenario: $0.60 – $0.85In the case of global CBDC interoperability use cases, enterprise-grade DeFi liquidity migration, or significant DAO and DID infrastructure anchoring to HBAR. These forecasts highlight Hedera’s upside as real-world systems begin shifting from centralized cloud-based models to auditable, low-latency distributed networks. Hedera’s success is tied not to hype—but to regulated utility. Roadmap Highlights Hedera’s 2025–2026 roadmap is focused on unlocking broader programmability, enterprise-grade identity integration, and cross-network connectivity—all while maintaining its efficiency and compliance-oriented architecture: - Smart Contract 2.0: Bringing full EVM compatibility to Hedera, allowing developers to deploy Solidity-based smart contracts with optimized gas usage and high throughput for scalable DeFi applications. - Decentralized Identity (DID): Expansion of decentralized identity solutions through global partnerships. Hedera will support DID frameworks for KYC, credential issuance, and government-grade digital identity infrastructure. - Real-Time Settlement Layer: Development of ultra-low-latency payment infrastructure enabling FX clearing, treasury reconciliation, and CBDC transaction support in milliseconds. - Interoperability Bridges: Building native bridges with Ethereum, Cosmos, Solana, and other major networks to facilitate secure token and data exchange across Web3 ecosystems. - Token Service Enhancements (HTS++): New features include compliance tagging, transfer hooks for conditional logic, event triggers, and expanded token programmability—all designed to make HTS a global standard for institutional-grade asset issuance. These initiatives demonstrate Hedera’s commitment to becoming the most production-ready, interoperable, and programmable public ledger for regulated and enterprise-scale deployments. Final Thoughts Hedera is not just another blockchain—it's the technological backbone for the next generation of enterprise infrastructure. In 2025, it is delivering what most platforms still promise: regulatory-grade performance, institutional trust, and real-world impact. HBAR is no longer defined by potential but by proof. It's being deployed to modernize national identity systems, optimize global supply chains, automate public registries, and tokenize everything from carbon credits to corporate shares. With a council of world-renowned organizations, unmatched throughput, and environmentally responsible design, Hedera stands as the most viable platform for public-private sector convergence in the digital era. As Web3 matures and demands scalable, compliant, and sustainable architecture, Hedera is not only ready—but already embedded. It is the future of digital infrastructure in motion. 🔗 Learn more at: https://hedera.com Read the full article

[revold--blog]

What is Position Trading?Position trading is a long-term trading strategy where traders hold positions for weeks, months, or even years, depending on the prevailing market trend. Unlike swing traders who focus on short-term fluctuations, position traders seek to ride large market trends by entering trades based on strong technical and fundamental signals.This strategy is commonly used in stocks, commodities, and cryptocurrencies, where long-term trends can be identified and exploited.How Position Trading Works- Identify a Strong Trend- Position traders look for assets that show sustained bullish or bearish trends over an extended period.- Fundamental factors like earnings reports, economic policies, and market cycles are also considered.- Enter a Trade Based on Trend Confirmation- A position trader enters a long trade in an uptrend or a short trade in a downtrend.- Confirmation is typically derived from moving averages (50-day, 200-day), trendlines, or breakout patterns.- Hold the Position for an Extended Period- Unlike swing traders, position traders do not react to minor price fluctuations.- They hold positions as long as the trend remains intact, sometimes for several months.- Use a Stop-Loss and Trailing Stop- Since position traders aim for larger price moves, their stop-loss levels are wider to account for volatility.- A trailing stop is often used to lock in profits while allowing the trend to develop further.- Exit the Trade When the Trend Weakens- A position trader closes the trade when trend-reversal signals appear, such as a moving average crossover, fundamental shifts, or loss of momentum.Example of Position TradingA trader identifies that Tesla (TSLA) stock has entered a strong uptrend after a positive earnings report.- The trader buys TSLA at $200 when the stock breaks above its 200-day moving average.- Over the next 6 months, TSLA rises to $300, confirming the trend.- Instead of exiting early, the trader trails their stop-loss upward to protect gains.- After 9 months, when the price starts showing weakness, the trader sells at $350.By holding the position for months instead of days, the trader captures a larger price move with minimal trading effort.Pros of Position Trading- Less time-consuming – Unlike day trading or swing trading, position trading does not require constant monitoring.- Captures major market trends – The strategy allows traders to maximize profits by staying in winning trades longer.- Fewer transaction costs – Holding trades for months reduces the number of trades, lowering commissions and fees.- Less impact from short-term noise – Position traders ignore daily price swings and focus on the bigger picture.Cons of Position Trading- Requires patience – This strategy is not suitable for those who seek quick profits.- Larger drawdowns are possible – Since stop-loss levels are wider, position traders need a higher risk tolerance.- Not suitable for highly volatile markets – Sharp price swings in crypto or small-cap stocks can lead to unexpected reversals.- Capital is tied up for long periods – Unlike day trading, position trading requires holding capital in a trade for months, which may limit other opportunities.When Should You Use Position Trading?- If you prefer a lower-maintenance strategy and have a long-term perspective.- If you want to ride major market trends rather than trade daily fluctuations.- If you have strong fundamental and technical analysis skills to identify long-term opportunities.- If you are comfortable with capital being locked in a trade for months or longer.Final Thoughts: Is Position Trading Right for You?Position trading is ideal for traders who want to capitalize on significant market moves without the stress of daily trading. While it requires patience, discipline, and strong trend analysis, it can be one of the most rewarding trading strategies for those who get it right. Read the full article

[revold--blog]

Scalping – The Ultra-Fast Trading Strategy for High-Frequency Gains

What is Scalping?Scalping is a high-frequency trading strategy where traders aim to make small, quick profits by executing dozens or even hundreds of trades within a single day. Unlike day traders, who may hold a position for hours, scalpers hold trades for seconds to minutes.Scalping relies on tight spreads, high liquidity, and rapid executions, making it ideal for highly liquid assets like forex, stocks, and cryptocurrencies.This strategy focuses on small price changes, meaning traders need a high win rate and precise execution to be profitable.How Scalping Works- Trade Only Highly Liquid Assets- Scalpers choose assets with tight bid-ask spreads and low slippage, ensuring quick entry and exit.- Popular choices include major forex pairs (EUR/USD, USD/JPY), blue-chip stocks (AAPL, TSLA), and large-cap cryptos (BTC, ETH).- Use Technical Analysis for Quick Decisions- Scalpers rely on price action, support and resistance levels, moving averages, and momentum indicators to spot short-term opportunities.- Key indicators include Bollinger Bands, MACD, RSI, and VWAP (Volume-Weighted Average Price).- Execute Many Small Trades- Scalpers take advantage of micro price movements, aiming for small profits (0.1% to 1%) per trade.- They enter and exit positions within seconds or minutes, often using leverage to amplify gains.- Strict Risk Management and Stop-Losses- Since scalping requires frequent trades, losses must be kept minimal using tight stop-losses.- Scalpers typically risk no more than 0.5% to 1% of their capital per trade.Example of a Scalping TradeA trader notices Bitcoin (BTC) is trading at $50,000, and price action shows a strong breakout above resistance.- Entry: The trader buys BTC at $50,050 after the breakout.- Stop-loss: Set at $49,950 (a tight $100 risk).- Take-profit target: $50,150 (a $100 gain).- Exit: BTC reaches $50,150 in less than 3 minutes, securing a $100 profit per BTC traded.The trader repeats this process multiple times per day, accumulating small profits that add up over time.Pros of Scalping- Fast profit potential – Many small profits can compound into substantial gains.- Minimal overnight risk – All trades are closed within minutes, eliminating exposure to overnight market moves.- Works in any market condition – Scalping does not depend on long-term trends; it thrives on volatility.- Can be automated – Many scalpers use trading bots to execute trades with high precision.Cons of Scalping- High transaction costs – More trades mean higher commissions and spreads, reducing net profits.- Extremely time-intensive – Scalping requires constant screen time and rapid decision-making.- Psychological stress – Fast trading can lead to fatigue, emotional trading, and burnout.- Not suitable for all brokers – Some brokers prohibit scalping or impose restrictions on ultra-fast trading.When Should You Use Scalping?- If you enjoy fast-paced trading and can make quick decisions under pressure.- If you have a reliable trading platform with low fees and fast execution speeds.- If you understand technical analysis and market microstructure.- If you have the time and focus to monitor charts for extended periods.Final Thoughts: Is Scalping Right for You?Scalping is one of the most demanding yet potentially highly profitable trading strategies. It requires sharp technical skills, discipline, and high-speed execution.While scalping can generate consistent small profits, it is not suitable for everyone due to its high stress, intense focus, and rapid pace.If you enjoy fast decision-making and high-frequency trading, scalping could be a great fit. However, for those looking for a more relaxed trading approach, swing or position trading may be better options. Read the full article

[revold--blog]

Breakout Trading – Capturing Explosive Market Moves

What is Breakout Trading?Breakout trading is a strategy where traders enter a position when the price breaks through a significant support or resistance level. The idea is that once a price moves beyond a key level with strong volume, it is likely to continue in that direction, leading to high-profit opportunities.Breakouts can occur in both bullish and bearish markets, allowing traders to buy on breakouts above resistance or short-sell on breakdowns below support. This strategy is widely used in stocks, forex, and cryptocurrencies due to its ability to capture large price movements early.How Breakout Trading Works- Identify Key Support and Resistance Levels- Traders look for horizontal resistance (previous highs) and support (previous lows).- Popular tools include trendlines, moving averages, and chart patterns like triangles, flags, and rectangles.- Wait for Price to Break the Level with Strong Volume- A valid breakout requires a surge in trading volume, confirming that institutions or large traders are involved.- Weak breakouts with low volume often fail, resulting in false breakouts.- Enter the Trade After the Breakout Confirmation- Traders typically buy after the price breaks above resistance or sell after it breaks below support.- A stop-loss is placed just below the breakout level to limit losses in case of a reversal.- Ride the Trend and Set a Profit Target- Many traders use previous resistance levels, Fibonacci extensions, or volatility-based targets to take profits.- A trailing stop is often used to lock in gains while allowing the trend to continue.Example of a Breakout TradeA trader notices that Tesla (TSLA) stock has been consolidating between $240 (support) and $260 (resistance) for several weeks.- Entry: TSLA breaks above $260 with high volume, signaling a breakout.- Stop-loss: Placed just below $255 to limit risk.- Profit Target: $280, based on the previous swing high.- Exit: TSLA reaches $280, and the trader exits with a $20 per share profit.Pros of Breakout Trading- Captures large price movements early – Entering at the breakout stage allows traders to ride trends from the beginning.- Works in all market conditions – Can be used in bullish, bearish, and sideways markets.- Defined risk management – Stop-losses are placed close to the breakout level, reducing potential losses.- Based on market psychology – Many breakouts occur due to institutional buying/selling, providing high liquidity.Cons of Breakout Trading- False breakouts are common – Many breakouts fail, causing whipsaws where price briefly moves above resistance but reverses quickly.- Requires patience and confirmation – Traders must wait for volume confirmation to avoid weak breakouts.- Volatility can trigger stop-losses prematurely – Sharp retracements may stop out traders before the trend resumes.- Not ideal for low-volatility markets – Works best when the market has strong momentum.When Should You Use Breakout Trading?- If you want to capitalize on strong price movements early.- If you prefer clear entry and exit signals based on support/resistance levels.- If you have good risk management skills to handle false breakouts.- If you trade highly liquid assets like major stocks, forex pairs, or cryptocurrencies.Final Thoughts: Is Breakout Trading Right for You?Breakout trading is a high-reward strategy for traders who can identify strong breakout levels and manage risk effectively. While false breakouts are a common challenge, using volume confirmation, stop-loss strategies, and patience can improve success rates.For traders who want to catch explosive moves early and ride trends for significant profits, breakout trading is a powerful tool. Read the full article