What is “unrar” Package?

Extract, view, and test RAR archives
For more details: http://www.rarlab.com

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 unrar.

  brew install unrar

Now, use unrar!