Threesuns

RVM is the Ruby Version Manager and will allow you to easily manage the installations of Ruby on your system as well as letting you have multiple non-interfering versions of Ruby installed.

To install RVM on a Mac go to the terminal application (applications/utilities/terminal) and run this command.

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

Once that is done close the terminal and reopen it.

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