easy dis/enabling gatekeeper in macOS 10.12. a tiny script i put in /usr/local/bin, filename "gatekeeper" so i don't have to remember spctl, just "gatekeeper on" and "gatekeeper off"

gatekeeper

#!/bin/bash
# Allows easily dis/enabling gatekeeper
# Place in /usr/local/bin/ for easy-access,
# don't forget to chmod +x 

case "$1" in
	on)
		sudo spctl --master-enable
		sleep 0.25
		sudo spctl --status
		;;
	off)
		sudo spctl --master-disable
		sleep 0.25
		sudo spctl --status
		;;
	*)
		echo $"Usage: $0 {on|off}"
		exit 1
	;;
esac