Unable to delete files/directories - bogus user/group ID's

Kris Kennaway kris at obsecurity.org
Mon Apr 23 07:12:54 UTC 2007

On Sun, Apr 22, 2007 at 11:56:31PM -0700, Don O'Neil wrote:
> I had a crash on a disk array last week that was severe enough that fsck
> wouldn't fix it, even in single user mode. So, I was forced to suck off the
> good data, and restore the bad stuff from backups.
> However there are 2 directories that contain files/directories which have
> bogus user & group ID's that the system just won't let me do anything to. I
> can delete them, cant rename them, cant move them, cant chmod/chown, cant
> cat to them, nothing... I just get "Operation not permitted".
> Here's a sample of one of them: 
> ---xr----x  1 2761022747  1016642816  0 Apr 19 15:35 Video
> d--s---rw-  2 3251161791  726015594  512 Apr 19 15:41 .shrc
> Anyone have any ideas on how to get rid of these files?
> I've done an fsck from single user mode and that doesn't come up with
> anything. Short of copying all the data over to a new volume sans these
> files and then reformatting the old volume and then moving the good files
> back what can I do?

It's unlikely to be due to the uid/gids, do a ls -lo to check for the
schg flag (man chflags).


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