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List all open ports

lookup for netstat utility

run following on console

#netstat -tlnp

Convert any Virtual Machine to Vagrant Box

Sometimes distribution providers (such as UCS) only give you VirtualBox .ova files to test their software. Here is how you can easily and non-interactively import a .ova file into a .box for use with Vagrant.

$ VBoxManage import ./UCS-Virtualbox-Demo-Image.ova --vsys 0 --eula accept 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% Interpreting /home/crohr/dev/ucs/./UCS-Virtualbox-Demo-Image.ova... OK. Disks: vmdisk1 53687091200 -1 http://www.vmware.com/interfaces/specifications/vmdk.html#streamOptimized UCS-Demo-Image-virtualbox-disk1.vmdk -1 -1 ... 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% Successfully imported the appliance.

Then list your VMs to find the VM ID:

$ VBoxManage list vms "UCS 4.1" {acef4c0a-35be-4640-a214-be135417f04d}

You can now package that VM as a Vagrant box:

$ vagrant package --base acef4c0a-35be-4640-a214-be135417f04d --output UCS.box ==> acef4c0a-35be-4640-a214-be135417f04d: Exporting VM... ==> acef4c0a-35be-4640-a214-be135417f04d: Compressing package to: /home/crohr/dev/ucs/UCS.box

And add it to the list of your local Vagrant boxes:

$ vagrant box add UCS.box --name UCS

Finally, you can create a Vagrantfile to use this box:

Vagrant.configure("2") do |config| config.vm.box = "UCS" # ... end

And vagrant up!

courtesy: Cyril Rohr : https://github.com/crohr/ebarnouflant/issues/7

#vagrant #linux

Atom regex replace with backref

use atom editor regex find and replace along with backref operator to do some complex ops

Example : single quoted string (‘this is a string’) to double quoted string in the code.

Search regex for :

\'((\w|\.|\/)*)\'

replace it by

"$1"

#atom-editor #regexp

Git Pull --rebase by default

To set rebase strategy for git pull

git config --global --bool pull.rebase true

#git #gitconfig

Helpful Git Configuration

file ~/.gitconfig

[user] email = <email> name = <author name> [alias] co=checkout st=status br=branch [push] default = simple [pull] rebase = true [core] editor = vim

#git #gitconfig

Use SSH as proxy

ssh command :: ssh -D 8080 -f -C -q -N myuser@remote_ssh_server

-D 8080 : This does the dynamic stuff and makes it behave as a SOCKS server. -f : This will fork the process into the background after you type your password. -C : Turns on compression. -q : Quiet mode. Since this is just a tunnel we can make it quiet. -N : Tells it no commands will be sent. (the -f will complain if we don’t specify this)

Configure your socks proxy to 127.0.0.1 and port you have chosen here it is 8080.

Example - for firefox network setting

network.proxy.no_proxies_on : localhost, 127.0.0.1, 192.168.0.0/24, .yourcompany.com network.proxy.socks : 127.0.0.1 network.proxy.socks_port : 8080 network.proxy.socks.remote_dns : true network.proxy.socks_version : 5 network.proxy.type : 1

The setting remote_dns will make sure also your dns requests will be tunneled over the SOCKS proxy

#linux #proxy #ssh

Switch windows in current workspace only

dconf write /org/gnome/shell/app-switcher/current-workspace-only 'true'

To erase it, going back to default settings:

dconf reset /org/gnome/shell/app-switcher/current-workspace-only

#linux gnome

[Django Note 2] Django create app

Apps are re-usable modules of code which can be attached to any project.

python manage.py startapp <app_name>

This will create a app structure in project folder

Add this app under INSTALLED_APPS tuple in settings.py of project

INSTALLED_APPS = ( 'django.contrib.admin, '<app_name>' )

#django #python

Django Notes

Index

Note 1 : Creating django project

Note 2 : Create django App

Note 3 : Make urls

Note 4 : Create a view

Note 5 : Create a models

Note 6 : Create Migrations

Note 7 : Woking with MySql

Note 8 : Global params and Environment Settings

#django #python

[Python Django Notes #1 ] Django up & running

Create a basic django project and make it running

Prerequisite: Django installed, Python installed.

django-admin startproject my_project

Result : this will create base scaffold in cwd(current working directory)

Index

#python #django

Pass and execute commands to remote ssh shell

Pass command as string using -t flag

ssh <user:password@server-address> -t "cd /my/remote/directory; bash --login"

in command string do pass bash --login else it will execute commands and exit there after.

note --login flag restore user profile for shell

#ssh #linux

poppler tools provide lots of utils in linux for pdfs

debian install

sudo apt-get install poppler-utils

Website : http://poppler.freedesktop.org/

#pdf #poppler #linux

Django setting up DB - MySql

1. Install Mysql Python

sudo pip install mysql-python

2. Add mysql client config lib

sudo apt-get install libmysqlclient-dev

3. in settings.py configure

DATABASES = {

‘default’: {

‘ENGINE’: ‘django.db.backends.mysql’,

‘NAME’: ‘mydatabase’,

‘USER’: ‘root’,

‘PASSWORD’: ‘password’,

‘HOST’: ‘localhost’,s hosted on

‘PORT’: ‘3306’,

}

4. run migrations

python manage.py migrate

#django #python #mysql

Forget MySql root password

Kill all mysqld processes

ps -A | grep mysqld

Restart mysqld with

sudo mysqld --skip-grant-tables

Update users table to reset passwords

#mysql #linux

GRUNT - For inline CSS for mailers

https://github.com/jgallen23/grunt-inline-css

#css #mailers

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