RVM

In my Omega 4 tutorial from LevelUpTuts, I'm instructed to install XCode, and this has something to do with getting Ruby installed. He talks about it in an Apple environment.

I'm managing Drupal on a linux machine using SSH from a Windows environment. I would have thought this was adding additional command capability on the site itself, hence up on the server. Is this something I need to be installing on my local PC or on the server where my Drupal site is located? Anyone have good reference for this?

feeling clueless and noobie-esque.... Amanda