unicornctl
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	#!/bin/bash

	usage() {
	echo >&2 "Usage: $0 <start\|stop\|status\|restart\|enable\|disable\|pid\|rotate\|respawn>"
	exit 1
	}

	cmd="$1"; shift

	[ -z "${cmd}" ] && usage

	service="unicorn"
	sig_rotate="USR1"
	sig_respawn="USR2"

	get_pid() {
	echo $(systemctl show -pMainPID $service\|cut -d= -f2)
	}

	case "$cmd" in
	status\|start\|stop\|restart\|enable\|disable)
	exec systemctl $cmd $service
	;;
	rotate\|respawn)
	pid=$(get_pid)
	if [ "${pid}" -eq 0 ]; then
	exec systemctl start $service
	else
	signal="sig_${cmd}"
	/sbin/start-stop-daemon --stop --pid "$pid" --signal "${!signal}" --quiet
	# Wait for Main PID to change on respawn
	while [ "${pid}" -eq $(get_pid) -a "${cmd}" = "respawn" ]; do
	sleep 1
	done
	fi
	;;
	pid)
	exec systemctl show -pMainPID $service\|cut -d= -f2
	;;
	*)
	usage
	;;
	esac