To make the file executable you need to
As a side note, the graphical shutdown option is only available when you log in as root.susan.pryce wrote:I am complete novice. I received an sd card with Debian wheezy preloaded. All started up fine. However when I click on red power button right screen the only options are log off or reboot. There is no shutdown option offered. So how do I shut down my pi without turning off power.