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What maintenence does OSX do in the background?

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Hi, Adam has mentioned that he doesn't shut off his mac at night etc in order to allow it to perform built in maintenece tasks in the background whilst the system is idle. Can anyone help a bit with this - I cannot seem to find more info about this.


Also, does anyone need to be logged in to allow this? how does this work?? What exactly does it do?


Many thanks for any input.




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since OS X runs on UNIX, it uses what's called "cron jobs" to do maintenance. these are scripts in the crontab file that specify what command to run (i.e. maintenance scripts) and what time to run them.

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