has anyone used mac janitor?

Tuttle Nov 3 2009 7:45AM:
"Those tasks have run through launchd (and not cron) since at least 10.5. If they aren't run automatically at the appointed hour because the machine is off or asleep, they will run automatically when the computer is next brought to life".

Is there an official source for the above statement?

Tuttle's recollection is the same as mine. I looked for a manual to confirm, but could not find the statement. I know that I read something early on that convinced me not to be concerned about either shutting down or sleeping my machine when not in use over the night.

http://developer.apple.com/macosx/launchd.html

http://developer.apple.com/Mac/library/documentation/MacOSX/Conceptual/BPSystemS tartup/Articles/Daemons.html

http://macdevcenter.com/pub/a/mac/2005/11/15/terminal5.html

http://forums.macosxhints.com/archive/index.php/t-39005.html

I use OnyX it is right up to date with a Snow Leopard version. It is very handy for cleaning and maintenance. It will repair permissions, verify your drive , set preferences delete caches and a whole lot more, all in one convenient place. Have a look.

http://www.titanium.free.fr/pgs2/english/onyx_snowleopard.html

:~))

Right, same with Cocktail. Very convenient.

New for OS X 10.5: You don't need to use any utility, or perform any procedure, to make sure OS X's built-in maintenance tasks have run under OS X 10.5 and later.

OS X 10.5 will run its cron jobs automatically (actually, they are no longer handled by the UNIX facility "cron", they are now handled by a similar facility called "launchd". if that means anything to you) whether you have left your computer on all night or not. You no longer need a utility to run missed maintenance as of OS X 10.5. It will run automatically at the next available opportunity. Actually, this was the case as of OS X 10.4, but a bug kept the maintenance routines from running more than once per restart under OS X 10.4. >This was fixed in OS X 10.5
http://discussions.apple.com/message.jspa?messageID=6552347
http://arstechnica.com/reviews/os/macosx-10.4.ars/5
http://developer.apple.com/macosx/launchd.html

from Macintosh OS X Routine Maintenance

Thanks everyone for that enlightenment ....... to think of how I have wasted my life ......... half a minute of MacJanitor every week for the last 18 months!

Ian:

You are welcome.

to think of how I have wasted my life ......... half a minute of MacJanitor every week for the last 18 months!

Let's see, that's 18 months times 4 weeks times time half a minute per week (18*4/.5=36) a total of 36 minutes. You could have had a nice little nap in that time 🙂

Cheers!