Running "nightly scripts" and other behind the scenes tasks

I keep seeing posts about how the iMac Intel runs nightly scripts and/or other tasks behind the scenes. There is no mention of this in the user manual nor does Apple warn you about not putting the computer to sleep so that these tools will run. My iMac hard drive is asleep every night (as am I...) how can I get these things to run manually? How often? And can someone point me to literature to support this info?
Thanks much,
HS

522/2968
Hi HS,
"There is no mention of this in the user manual"
That's because the three nightly maintenance scripts are not important at all, and don't affect Mac OS X performance.
They are only a relic from the glorious Unix system times when it was used on rather small capacities HDs, on computers that were running non stop for months or years...
Running them yourself manually, as a "perfectionist measure", can be done easily using the "daily, weekly & monthly" features in OnyX or Cocktail for example. All three tasks together, once a month or so, is fine. No harm (but useless) rerunning them many times.
Litterature:
The KB article is quite old, it shows only the default 10.2 times and commands:
- http://docs.info.apple.com/article.html?artnum=107388
(almost same as 10.3 and 10.4 though)
What I really would like to learn, is whether the scripts have been modified in the Intel version of Tiger.
Could you please (or Joseph or somebody else), in Finder, Go To (shiftcommandG) this folder:
/private/etc/
see if there is still the same
/private/etc/periodic
folder, with the three
/private/etc/periodic/daily
/private/etc/periodic/weekly
and
/private/etc/periodic/monthly
scripts?
(I'm asking because I don't own an Intel Mac myself).
Next you would Go To (⇧⌘G) this folder:
/System/Library/LaunchDaemons
please, see if you find those three files
/System/Library/LaunchDaemons/com.apple.periodic-daily.plist
/System/Library/LaunchDaemons/com.apple.periodic-weekly.plist
and
/System/Library/LaunchDaemons/com.apple.periodic-monthly.plist
If they are still there, you can open them (with TextEdit if your Developer Tools are not installed), and read the default times when the tasks are scheduled to run.
Thanks in advance!
Axl

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