ruby on rails

Source : https://www.digitalocean.com/community/tutorials/how-to-install-ruby-on-rails-on-ubuntu-12-04-lts-precise-pangolin-with-rvm
Source : https://rvm.io/rvm/install

1 Install RVM in Multi-User mode

  sudo  curl -sSL https://rvm.io/mpapis.asc | gpg --import -
  sudo \curl -L https://get.rvm.io | bash -s stable
  add the correct user(s) to the group rvm
  logout and relogon
  source /etc/profile
  rvm requirements

2 Install Ruby

  rvm install 2.1
  rvm use 2.1 --default

3 Install RubyGems

   rvm rubygems current
 
 4 Install Ruby On Rails
 
   gem install rails