Erik Veenstra created two scripts, tar2rubyscript and rubyscript2exe, which essentially grab what you wrote, wrap it up with some other code, bundle it with the ruby executable, and spit out a finished, executable package - which will run on that same OS – so compile it on Windows, get a Windows executable, compile on Linux, get Linux executable, etc. <a href="http://www.erikveen.dds.nl/tar2rubyscript/index.html">tar2rubyscript</a> <a href="http://www.erikveen.dds.nl/rubyscript2exe/">rubyscript2exe</a> As I'm a newb, it took me a while to figure out that I need .