The underlying UNIX structure of Mac OS X relies on a set of system maintenance scripts to run in order to keep your system tidy. These scripts execute overnight and if you put your Mac to sleep or completely shut it down, they won't be run. Without running those scripts, your Mac could fill up with logs and temporary files. Here's how to run the scripts:

1. Open Terminal (/Applications/Utilities).
2. Type: sudo sh /etc/daily
   Note: Typing "daily" runs tasks normally scheduled for a daily interval. Type "monthly" or "weekly" in place of "daily" to run tasks scheduled for those intervals.
3. Press Return.
4. Enter your Admin password when prompted, then press Return.
5. Quit Terminal when the task is complete. Monthly tasks usually require a longer time to run than weekly or daily.

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