ruby1.8 1.8.6-2 (amd64 binary) in ubuntu gutsy

 Ruby is the interpreted scripting language for quick and easy
 object-oriented programming. It has many features to process text
 files and to do system management tasks (as in perl). It is simple,
 straight-forward, and extensible.
 .
 This package provides version 1.8 series of Ruby.
 .
 On Debian, Ruby 1.8 is provided as separate packages. You can get
 full Ruby 1.8 distribution by installing following packages.
 .
   ruby1.8 ruby1.8-dev ri1.8 rdoc1.8 irb1.8 ruby1.8-elisp
   ruby1.8-examples libdbm-ruby1.8 libgdbm-ruby1.8 libtcltk-ruby1.8
   libopenssl-ruby1.8 libreadline-ruby1.8