Debian Hint #28: If your machine is not on all of the time (such as a laptop), check out the 'anacron' package; this will make sure that regular tasks

Debian Hint #28: If your machine is not on all of the time (such as a
laptop), check out the 'anacron' package; this will make sure that regular
tasks still happen, even if the machine isn't on at the time they would
normally trigger.