Getting Started

@statonjr Is this what you need?

Try it! Not ready to download yet? You can try JRuby as an applet right in your browser ! Getting Started with JRuby JRuby is one of the easiest Ruby implementations to set up. Let’s start with the basic instructions: Download JRuby : Visit the download page and grab the binaries for the latest JRuby release. Unpack JRuby : Unpack the file you downloaded. You’ll then have a "jruby-<version>" directory. Run JRuby : The JRuby startup script lives in the "bin" directory. Run "bin/jruby -v" to confirm it. That’s about it! Windows If you’re on Windows, we’ve already prepared several flavors of installers for you. Just pick 32- or 64-bit, and whether to bundle the Java Virtual Machine or not. Other ways to get JRuby If you use RVM , then installing JRuby is also a piece of cake: rvm install jruby JRuby might also be available as OS packages for your favorite package manager, che...

Full article: http://jruby.org/getting-started