||Scheduling Tasks in Panther|
it might be worth mentioning anacron, which is good for systems that are turned off at night, or notebooks. cron won't execute a task that's been "missed" due to the system not being on. anacron, on the other hand, will check the task's last execution time and run it if needed.
I believe the url is < href="htp://anacron.sourceforge.net">http://anacron.sourceforge.net.