test@testvm:~$ ruby ruby-stuff/test-rb/simple.rb
/home/testvm/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mysql (LoadError)
        from /home/siriproxy/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
        from ruby-stuff/test-rb/simple.rb:4:in `<main>'
test@testvm:~$