![]() The main script tasks involve cleaning out old log and temporary files and rebuilding Unix’s locate and whatis databases. (Tiger is supposed to do so, as well, although this automatic feature didn’t work as well.) Second, the tasks these scripts perform aren’t so important that a few missed executions will adversely affect your Mac. First, if you put your Mac to sleep at night, instead of shutting it down, Leopard is smart enough to run the missed scripts the next time you wake up your computer. However, the situation isn’t as dire as you might think. It’s also true that if you shut down your Mac every night, the scripts don’t run. It’s true that there are Unix scripts that perform certain cleanup tasks in the early morning-one script every day, a second script once a week, and a third once a month. ![]() The story goes that because these scripts are scheduled to run in the middle of the night, putting your Mac to sleep or shutting it down prevents them from running-so you need to do so manually. You may have heard about a collection of magical Unix maintenance scripts that OS X is supposed to run automatically. Myth #2: “You need to run the Unix maintenance scripts.” Repairing Permissions: What you need to know. For a comprehensive look at this topic, see Troubleshooting tool rather than a maintenance task. So I recommend repairing permissions as a ![]() If you ever do have a problem with system-level permissions, your Mac will likely behave oddly, and you’ll usually be able to use the Repair Disk Permissions function then to fix the problem without any data loss or long-term effects. ![]()
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