Installing Ruby on Rails in Ubuntu

Cited from Coursera Ruby on Rail Introduction

sudo apt-get install git gitk git-gui

sudo apt-get install gcc build-essential libpq-dev libssl-dev libreadline-dev libsqlite3-dev zlib1g-dev

git clone git@github.com:rbenv/rbenv.git .rbenv

echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc