Living in Tokyo @beaconsco - Tumblr Blog

Preventing Firefox window getting closed on closing the last tab

https://support.mozilla.org/en-US/questions/1205166

Open advanced config with about:config

Enter browser.tabs.closeWindowWithLastTab and set its value to false

How to install and use MySQL 5.7 on Ubuntu 16.04

Firstly, install MySQL server with:

sudo apt-get install mysql-server mysql-client libmysqlclient-dev

MySQL starts, but you cannot login as root since you don't know the password.

Next, stop MySQL server with:

sudo service mysql stop

Delete MySQL data directory with:

sudo rm -rf /var/lib/mysql

Create MySQL data directory with:

sudo mkdir /var/lib/mysql \ && sudo chown mysql:mysql /var/lib/mysql \ && sudo chmod 700 /var/lib/mysql

Initialize MySQL database with:

sudo mysqld --initialize

Find your temporary root password in file /var/log/mysql/error.log. It might be easier if you do:

cat /var/log/mysql/error.log | grep password

and there should be a line something like:

2016-12-18T09:15:00.428252Z 1 [Note] A temporary password is generated for root@localhost: r3dLqy7Ljo/G

Log into MySQL with this temporary password:

mysql -uroot -p Enter Password:

Once logged in, set your new password with:

> SET password="my-new-password";

Then, you can login as a root user with the new password from the next time.

#mysql ubuntu xenial

Autumn leaves

Adjusting server clock immediately

sudo ntpdate -u 0.jp.pool.ntp.org

#ntp #linux

Installing tools to Mac OS

To have some tools like zlib and others on Mac OS, I need to do:

xcode-select --install

#mac os x

Shipped WebService::SOP for Perl 6

Just pushed a module WebService::SOP for Perl 6 ecosystem.

It's really fun writing Perl 6. I feel I'm getting used to it step by step.

#perl6

Threading issues in Perl 6

It seems like there's are improvements in Perl 6, MoarVM, to be precise, are still ongoing.

When I use File::Temp::tempfile() in parallel threads, regex sometimes gives me a warning message like:

Use of Nil in string context in block at /Users/yowcow/.rakudobrew/moar-nom/install/share/perl6/site/sources/A3786D38E44F2EA575B6353BC257D191D610B477 line 38

and something similar is listed in a MoarVM roadmap at time point.

#perl6

Parallel HTTP request in Perl 6

Wrote a script to do parallel requests in Perl 6:

#perl6

[Perl5] Simple IPC using pipe

I went out to Kichijoji.pm last night and there was a talk about redirection > and pipe |.

It's true that it is useful to have some sort of communication between parent and child processes but such occasion doesn't happen that frequent in my life.

Here's a very simple example of forking multiple child processes, and parent process gathering pipe input from it's children.

#perl5

Shipped String::CamelCase for Perl 6

Wrote and shipped Perl 6-port of String::CamelCase from Perl 5.

It's a good opportunity to learn something new, and make some sort of output for contribution... It has been quite a fun writing, actually.

#perl6

When Mac OS’s `path_helper` messes your PATH

If you use zsh and don't want Mac OS to mess your $PATH with a thing called path_helper, you should probably think about installing it for your own through homebrew with --without-etcdir compile option.

% brew install --without-etcdir zsh

and use zsh at /usr/local/bin/zsh as your login shell by adding /usr/local/bin/zsh to /etc/shells and then do:

% chsh -s /usr/local/bin/zsh

#mac os x #homebrew #zsh