From: "Tyrel R." <tyrelrichey@...>
Date: 2011-07-14T07:02:29+09:00
Subject: Re: ruby -v does not detect ruby

Also you might consider using RVM its very useful you can install 
different versions of ruby and have different sets of gems for each 
version. Best of all you can install locally which means no sudo.

https://rvm.beginrescueend.com/

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