Installed Ruby 1.9.3 with RVM but command line doesn't show ruby -v

Here's the console output: sergio@sergio-VirtualBox:~$ rvm list rvm rubies ruby-1.9.3 [ i386 ] sergio@sergio-VirtualBox:~$ rvm use 1.9.3 Using /usr/share/ruby-rvm/gems/ruby-1.9.3 sergio@sergio-VirtualBox:~$ ruby -v The program 'ruby' can be found in the following packages: * ruby1.8 * ruby1.9.1 Try: sudo apt-get install <selected package> So what's going on? Do I need to reboot my machine? Or should it work right off the bat? I'm using Ubuntu 11.10, any help is appreciated.