* Jochen Schulz <m...@well-adjusted.de> schrieb:
> Pol Hallen:
> >
> > I try to redirect output of this script to file (using tee) and also send
> > it to mail
> >
> > the script deletes files older than 150days:
> >
> > find /share/.trash/ -type f -atime +150 -exec rm -fr {} \;
>
> - atime finds files *last accessed* 150 days ago. You probably need
> mtime instead.
Depends on the access patterns of these files. Maybe they're created
somewhen, but might be read later. In this case, -atime is correct.
> I am not even sure whether running the script will change the atime
> of all files in the directory and thus prevent anything in it to
> be deleted.
IMHO should not to. find does only directory scan and stat()'s, but
doesnt open() the files, so atime shouldn't be touched. (actually,
haven't checked yet).
> You should make sure that the filesystem is not mounted with
> "relatime" or "noatime" as well when using atime.
ACK. Note that this is done quite rarely, since it puts more load
onto the medium (metadata's touched each time a file's open()ed).
Maybe inotify is a better solution.
> - You are starting an rm process for every file to delete. You can end
> the command with "+" instead of "\;" to make find pass as many files
> to rm as possible. If you delete many files that way, that may make a
> big difference spped-wise.
But you have to be careful that the command line doesnt get too long.
If you're really concerned about perfomance, you could use busybox
(with all commands compiled-in) as shell do write your script this way:
do_rm() {
while read FILE ; do rm -fr $FILE ; done
}
find /share/.trash/ -type f -atime +150 | do_rm
That will only require one or two fork()'s.
> - Do you want to have the list mailed as an attachment? -Then I would
> just redirect the output to a file and use mutt's batch mode to send
> the file (mutt -x -a $file).
If you have a local sendmail command, you could simply pipe it there.
(
echo "From: r...@my.box.org"
echo "To: mys...@foo.org"
echo "Subject: garbage collection output"
echo
find...
) | /usr/sbin/sendmail -t
cu
--
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Enrico Weigelt, metux IT service -- http://www.metux.de/
phone: +49 36207 519931 email: weig...@metux.de
mobile: +49 151 27565287 icq: 210169427 skype: nekrad666
----------------------------------------------------------------------
Embedded-Linux / Portierung / Opensource-QM / Verteilte Systeme
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