[ILUG] puzzle of the day: RHEL has files seemingly undoing edits

[Frank Duignan]

Is there a cron job restoring default files as part of some security
measure?

On 12/02/2008, Michael Watterson <watty at eircom.net> wrote:
>
> Kae Verens wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > Gavin McCullagh wrote:
> >
> >> Hi,
> >>
> >> On Tue, 12 Feb 2008, Brendan Kehoe wrote:
> >>
> >>
> >>>    Anyway, I'm seeing files which I edit and change regressing back,
> >>>    all by themselves to previous versions of the file.
> >>>    Thus I edit the file, save, close, and do anything (md5sum, copy,
> >>>    wc, whatever) with the file, and it works fine.
> >>>    Then I come back in 20 minutes, and again try to use the file (run
> >>>    md5sum, whatever) and it fails,
> >>>    I check why and the file I had just updated is back to its original
> >>>    file!!
> >>>
> >> Does the datestamp change?  Does it go forward or backward?
> >>
> >
> > probably a silly question, but are the files held on a medium such as
> > Flash or Floppy? the reason I ask is that those file systems are
> > asynchronous and might not be committed to the medium immediately, so a
> > system crash might have uncommitted edits.
> Or indeed RAID, esp RAID5 can do this... Or Mad Filesystem Cache SW.
>
> --
> Mike
>
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