RubyGems, the Ruby package manager, was also installed:
$ which gem
Update to its latest version with:
$ gem update --system
To install a "gem" (Ruby package), run:
$ gem install <gemname>
To install without generating the documentation for each gem (faster):
$ gem install <gemname> --no-document
To see what gems you have installed:
$ gem list
To check if any installed gems are outdated:
$ gem outdated
To update all gems or a particular gem:
$ gem update [<gemname>]
RubyGems keeps old versions of gems, so feel free to do come cleaning after updating:
$ gem cleanup
We mainly use Ruby for the CSS pre-processor Compass, which is built on top of Sass:
$ gem install compass --no-document