What is “ruby-build” Package?

Install various Ruby versions and implementations
For more details: https://github.com/rbenv/ruby-build

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install ruby-build.

  brew install ruby-build

Now, use ruby-build!