Does it do these things even if the Mac is "sleeping?"
Friday, March 7, 200310:16 AMLee LarsonLeeLarson at mac.com
>On Friday, March 7, 2003, at 03:16 AM, Allen Prunty worried:
>
>> What does my mac do when I'm sleeping?
>
>There's a utility called cron on Unix systems that is used to schedule
>periodic tasks. The list of things your Mac does is contained in the
>file /etc/crontab. Here's the one from Mac OS X
>
>[Lee-Larsons-Computer:Mordor] lee% cat /etc/crontab
># /etc/crontab
>SHELL=/bin/sh
>PATH=/etc:/bin:/sbin:/usr/bin:/usr/sbin
>HOME=/var/log
>#
>#minute hour mday month wday who command
>#
>#*/5 * * * * root /usr/libexec/atrun
>#
># Run daily/weekly/monthly jobs.
>15 3 * * * root periodic daily
>30 4 * * 6 root periodic weekly
>30 5 1 * * root periodic monthly
>
>A * in the chart is a wild card that means to do it all the times for
>that column. It's a 24-hour clock. This one runs three different sets
>of scripts that live in the directory /etc/periodic. You can look at
>them with the terminal. They do things like rotate the log files and
>remove temporary files. Sometimes they're even interesting to read
>because of the technical language. For example, here's a snippet from
>500.daily.
>
># Clean up NFS turds. May be useful on NFS servers.
>#if [ "${host}" != "localhost" ]; then
># find / -name .nfs\* -mtime +7 -exec rm -f -- {} \; -o -fstype nfs
>-prune
>#fi
>
>if [ -d /tmp ]; then
> cd /tmp && {
> find . -fstype local -type f -atime +3 -ctime +3 -exec rm -f -- {}
>\;
> find -fstype local -d . ! -name . -type d -mtime +1 -exec rmdir --
>{} \; \
> >/dev/null 2>&1; }
>fi
>
>
>
>| The next meeting of the Louisville Computer Society will
>| be March 25. The LCS Web page is <http://www.kymac.org>.
| The next meeting of the Louisville Computer Society will
| be March 25. The LCS Web page is <http://www.kymac.org>.
