Package Information:

Name: fleetctl
Use: Distributed init system
URL: https://github.com/coreos/fleet

Installation Steps:

1. Open Terminal using Spotlight search by pressing <command+space>. Type terminal and hit Enter key.
2. Now, run

   ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

3. Install fleetctl using brew

   brew install fleetctl

fleetctl is ready to use now!