RoR setup on Ubuntu

This was straight forward but no site seemed to have all the steps:

$ sudo apt-get update

$ sudo apt-get install ruby1.9.3

$ sudo apt-get install libsqlite3-dev

$ sudo apt-get install nodejs

$ sudo gem install rails

$ mkdir rails-apps

$ cd rails-apps/

$ rails new my_app

$ cd my_app

$ rails server

http://localhost:3000/

QED