Running Periodic Maintenance Scripts in Mountain Lion

Question

Here's an oldie question that I think has been asked with every new version of Mac OS X.  If a user shuts down his Mac in the evening and restarts in at 7AM the next morning, do the three periodic maintenance scripts ever run in Mountain Lion?
It's easy to run them manually in Terminal or even with with an Applescript that I wrote, but do they need to be run under the condition I posed above?
Thanks.

Answer 1

For those people stating that no one needs to run these scripts or that they're somehow dangerous, please reconsider before posting inaccurate things like that.
I haven't seen anyone stating that the scripts are dangerous. Clearly, they aren't. They are, however, unnecessary if the system is rebooted every day. The only exception is the periodic daily script 100.clean-logs, which deletes symbolic links in /Library/Logs/CrashReporter to crash and panic reports in /Library/Logs/DiagnosticReports older than 60 days. The reports themselves are deleted by a different process. Conceivably, if this script didn't run for a long enough time, the boot volume might fill up with broken symlinks to deleted crash reports. How long would that take?
Well, a symbolic link takes up 77 bytes of storage space. Storage devices, however, allocate space in minimum units of one sector, which is usually 512 bytes. Some of the newer 3 TB hard drives have a 4096-byte sector size. So let's make some worst-case assumptions. Your boot drive is 3 TB, and you have only 1% of that space free, which is 30 GB. You generate 100 crash reports a day -- those being only crashes of system processes, of course, not user processes, which are logged to a different place. So your volume is filling up with symbolic links at the rate of about 400 KB a day. At that rate, it would take only about 75 years to fill it up completely.
So you're quite correct. If your system is always shut down -- not in sleep -- between the hours of 3:15 and 5:30 AM every day, you should manually run 100.clean-logs at least once every 75 years. Let's say once every 25 years, to be on the safe side. Thanks for pointing that out.
Properly Maintain Macbook pro: Apple Support Communities