[plug] Crontab??

[Senectus .]

I have various jobs that I want to start and stop at particular times.
I've tried all sorts of things but I've never seem to be able to get
crontab to do what I want it to do, when I want it...
I've read man files (not much use), and various howto's etc.. and none
of them seem to make any sense.. does anyone know of a decent tutorial
for crontab?


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