#!/bin/bash

xmessage "Are you sure you want to shut down the computer?" -center -title "Power options" -font "Monospace bold 10" -default "Cancel" -buttons "Cancel":1,"Log out":2,"Reboot":3,"Shut down":4 >/dev/null

case $? in
1)
	echo "Exit";;	
2)
	openbox --exit;;
3)
	systemctl reboot;;
4)
	systemctl poweroff;;
esac