ruby rvm
$ sudo apt-get install ruby rubygems $ sudo gem install rvm $ bash < <( curl http://rvm.beginrescueend.com/releases/rvm-install-head ) $ vi ~/.bash_profile ----- if [[ -s $HOME/.rvm/scripts/rvm ]] ; then source $HOME/.rvm/scripts/rvm ; fi ----- $ rvm install 1.9.2 $ rvm use 1.9.2 --default $ gem install rails
