Execute remote command from command line and playbook with ansible.

Quick steps of getting started with vagrant including installation, vm starting up and a few commonly-used commands.

Quick steps of setting up and using python virtualenv.

An issue found for iterm2 on Mac is that the color of profiles does not apply, e.g. run "ls -l" command you don't see the different colors for directories or files.

How to config shadowsocks server on ubuntu.

Some log4j tips.

Basic usage of python fabric.

Python literal conversion using the "ast.literal_eval()" method.

Bash cheatsheet.

Linux bash scripting basics and tips.