If you are using RVM and trying to code quick ruby scripts you will soon figure out that
going to fail on you if you are not lucky. This is because your ruby is located somewhere under your rvm folder and
not in the
/usr/bin/ folder. Here is the quick fix to point to the correct version/location of ruby:
What this does is that it runs the /usr/bin/env to get your ENVIRONMENT info and run the version of the ruby set in your PATH. rvm automatically sets the paths in your ENVIRONMENT to the ruby executable.