I'm looking for a daemon that will run a command once every week. But I am not looking for something like cron that will run a command at a specific time. Because my laptop is turned off a lot, it happens a lot that that command will not run, because it simply misses the moment that cron runs that command.
Thus, I am looking for a daemon that I can tell to run a command whenever it has been a week (or any other amount of time) since it has ran that command.
I have been searching around a lot for such a utility, but I have not been able to find it. So, does anyone here know such a utility?