JRuby hash bang

How to use JRuby as script interpreter on *nix systems

Include a "hash bang" line on the top of your jruby script like this:

#!/usr/bin/env jruby

That will use the system wide installed jruby interpreter to run your script.

If you would like to use a local copy of JRuby to run your script, give the relative or absolute path to the jruby program:

#!/usr/bin/env jruby-1.1RC2/bin/jruby

To run the script directly, you need to set the "x" flag on it:

chmod +x your_script.rb

You can now start you script with

./your_script.rb