Jruby
From ArchWiki
Installing Jruby on Arch
Note: jruby is will require either [openjdk] or [jre] in order to run.
- Download the latest Jruby from jruby.org to '/opt/jruby'
- Add 'opt/jruby/bin' to your path
# export PATH=$PATH:/opt/jruby/bin
Testing Jruby
- Run the following command to test jruby
# jruby -v jruby 1.2.0 (ruby 1.8.6 patchlevel 287) (2009-03-16 rev 9419) [i386-java]