How to Schedule a Ruby Script

I have a ruby script I'd like to execute every 5 minutes or so. I have seen mention of cron tasks, but not in the context of executing Ruby. I would like to know the steps necessary to execute the ruby script on a scheduled basis.

From ubuntu JPrescottSanders

• Scripts are scripts whether they be python, bash or ruby. Just make sure they are executable.

  They are the same as steps listed here.

  From garbagecollector