What is “rc” Package?

Implementation of the AT&T Plan 9 shell
For more details: http://doc.cat-v.org/plan_9/4th_edition/papers/rc

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 rc.

  brew install rc

Now, use rc!