Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have a share on one mac that I am trying to rsync a set of directories from a second mac.

The share is mounted on the second mac and ls -l shows access like for all the directories drwx---rwx 1 shaun staff 466 Nov 23 06:53 Backup, but I am getting the error: rsync: failed to set times on "/Volumes/Data/Media Library/Documents": Permission denied (13).

The perl script (with only one test directory) is:

$source = '/Volumes/LEXAR64GB';
$destination = '/Volumes/Data/Media Library';
@folders = ('Documents');
print "Working…\n";
foreach $i (@folders) {
    print "Processing: $i\n";
    system("rsync -arub --delete --backup-dir='$destination/rsync backup' --modify-window=1 '$source/$i/' '$destination/$i'");

Should I be running the command as a different user?

share|improve this question
up vote 2 down vote accepted

I suppose, that Mac OS uses NFS to share over network.

This is from rsync man page, give it a try.

-O, --omit-dir-times This tells rsync to omit directories when it is preserving modification times (see --times). If NFS is sharing the directories on the receiving side, it is a good idea to use -O. This option is inferred if you use --backup without --backup-dir.

share|improve this answer
+1 for O, this thread on SO could also interest you @shaun5. – terdon Dec 8 '12 at 16:57
Mac OS X doesn't use NFS, but it may work – shaun5 Dec 13 '12 at 14:33

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.