Here's a quick guide to get Processing working without the desire to wrap one's car around a tree due the sheer verbosity and inflexibility of a language. A sneak: Make sure Java's installed [mchadw@zzz ~]$ which java /usr/bin/java Snag jRuby Download a recent copy of jRuby. Whatever the most recent binary on that page is will do the trick. Unpack the distribution somewhere you can remember. I'm g