$ brew update
$ brew install rbenv
$ brew install ruby-build
append eval "$(rbenv init -)"
to your bash profile
$ rbenv install 1.9.3-p327
$ rbenv global 1.9.3-p327
$ ruby -v
$ brew update
$ brew install rbenv
$ brew install ruby-build
append eval "$(rbenv init -)"
to your bash profile
$ rbenv install 1.9.3-p327
$ rbenv global 1.9.3-p327
$ ruby -v