What is “rancid” Package?

Really Awesome New Cisco confIg Differ
For more details: http://www.shrubbery.net/rancid/

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 rancid.

  brew install rancid

Now, use rancid!