Thanks Dean, Simon, Zhasper and Martin.
Got crontab to shutdown my PC at a predetermined time thanks to your assistance.
Martins suggestion of using shutdown -h 200608142000 is interesting. Will try that next time. I just wanted to automatically shutdown my Mythtv ( MythDora) PC after a late-night recording of a TV program was finished, just like a VCR does, and to be able to set my PC to do this anytime that I configure a recording. In other words, each auto shutdown is an individual once-only operation. Crontab worked fine. Unfortunately, although MythDora recorded fine, the channels were not setup correctly. ie Nine Digital actually recorded 10, though Nine HD works fine, and selecting Nine Digital to view a program also works fine. Some problem with the Program Guide I think. Will setup the Channels again. Thanks Your replies showed once again that in Linux there's always more than one way to skin a cat, so to speak. Bill -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html