Installing Ruby on Ubuntu

Ubuntu seperates many standard ruby components. The following console command installs many of the necessary ones for Ruby 1.8:

sudo apt-get install ruby1.8 ruby1.8-dev libruby1.8 irb1.8 rdoc1.8 ri1.8 rubygems1.8 libreadline-ruby1.8

Afterwards update ruby gems:

sudo gem update —system

That’s it!