What is “wait_on” Package?

Provides shell scripts with access to kqueue(3)
For more details: https://www.freshports.org/sysutils/wait_on/

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 wait_on.

  brew install wait_on

Now, use wait_on!