Sully-2:~ csullivan$ which ruby
/usr/bin/ruby
Sully-2:~ csullivan$ ruby -v
ruby 1.8.6 (2007-09-24 patchlevel 111) [universal-darwin9.0]
Sully-2:~ csullivan$ ruby -e 'p $:'
["/Library/Ruby/Site/1.8", "/Library/Ruby/Site/1.8/powerpc-darwin9.0", "/Library/Ruby/Site/1.8/universal-darwin9.0", "/Library/Ruby/Site", "/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8", "/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/powerpc-darwin9.0", "/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal-darwin9.0", "."]
Sully-2:~ csullivan$