What is “yash” Package?

Yet another shell: a POSIX-compliant command-line shell
For more details: https://yash.osdn.jp/

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 yash.

  brew install yash

Now, use yash!