What exactly are the cron scripts doing?

Hi,
Hope the subject says it all: I have searched but not found a detailed explanation as what the cron scripts (daily, weekly, monthly) actually do, and if the utilities (Onyx, Cocktail, Xupport, etc) are doing exactly the same.
Can someone point to a site or explain?
TIA
Dan

Hi Dan,
(in addition to Barry's reply)
Yes,
1) running the Daily, the Weekly and the Monthly tasks manually with an utility, or
2) running them yourself with the
sudo periodic daily
sudo periodic weekly
sudo periodic monthly
Terminal commands
(or this one: sudo periodic daily weekly monthly), or
3) leaving your computer running 24/7/365 so that they run automatically,
all three ways do exactly the same thing.
--> To see what they do exactly, the best way is to open Console, and in the /var/log section, look for "daily.out", "weekly.out" and "monthly.out".
What exactly are the "cron scripts" doing?
(Periodic tasks)
In Console, you'll find a lot of different files that grow with more and more information every minute, even every second for some of them.
The three Periodic tasks regularly rearrange them and compresses them so that they don't take too much disk space.
They also rebuild some system database so that the data never gets unusable by the system.
HTH
Axl
201

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