ruby version manager

To ease local development with ruby and also to ease further installation of rubygems, rvm - ruby version manager - is highly recommended.

Basically it will manage various ruby installation for *your* current user and give you a helpful set of commands to ease maintenance of them.

Basically this allows you to go forward with ruby without tempering your system.

Installation

curl -L https://get.rvm.io | bash -s stable

rvm comes with quite a good help page, by just entering

rvm

or

rvm help <cmd>

rvm install 1.9.3
rvm default 1.9.3
rvm use 1.9.3