cksum entire dir??
kline at thought.org
Wed Sep 12 02:10:29 UTC 2012
On Wed, Sep 12, 2012 at 02:48:54AM +0200, Polytropon wrote:
> On Tue, 11 Sep 2012 17:24:08 -0700, Gary Kline wrote:
> > On Wed, Sep 12, 2012 at 01:14:43AM +0200, Polytropon wrote:
> > > On Tue, 11 Sep 2012 14:38:04 -0700, Gary Kline wrote:
> > > >
> > > > I'm trying to checksum directories as I move them around.
> > > > ive read the man page for sum and cksum ... or maybe skimmed
> > > > them. no joy. anybody know of a utility to do this? I've
> > > > got files that are decades old...
> > >
> > > Maybe it's possible to tar the directory (without
> > > compression of course) and obtain a checksum of
> > > the tar archive?
> > >
> > > % tar cf - <director> | cksum
> > >
> > > But I also tried cksum directly with a directory
> > > like
> > >
> > > % cksum <directory>
> > >
> > > and could obtain a checksum - so it _seems_ to work.
> > > After alteration of one file within the hierarchy a
> > > different result was printed.
> > >
> > > Tested on OS version 8.2-STABLE/i386, one year old.
> > >
> > I think I tried something like your second example last night.
> > I think I did
> > % cksum foodir/*
> That lets the shell expand * to the content of foodir, making
> a final command line like "cksum foodir/file1 foodir/file2"
> and so on. If you omit the /* part, the directory will be
> checksummed entirely. If you then remove a file or change
> it, a different checksum will be printed. At least that is
> my interpretation of what I've tested.
> > if there isn't anything that can compare entire dirs, it looks like
> > it's time to hack a small program. tx, polyt.
> The Midnight Commander has a function to compare directories
> which will also identify _which_ files have changed (unlike
> the command "cksum foodir" that will tell you _that_ a file
> has been changed) and use the "mark file" function to highlight
> those files. It can be accessed by putting one directory into
> the left, the other one into the right panel, and then F9 C C
> (or Ctrl-X D). You are then presented a selection:
> +---------------- Compare directories -----------------+
> | Select compare method: |
> | |
> | [ Quick ] [ Size only ] [ Thorough ] [ Cancel ] |
> Quick = file names, Size only = file sizes, Thorough = file
I'm not concerned about a file having been changed, just whether
% cp -rp /home/klinebak/foodir /home/kline/
is 100% reliable. down to the bit! a friend has volunteered
to take over my system admin chores. he left my drive fragmented
and while I am going over /home/klinebak with extreme caution--
getting rid of dross while coping everything valid to my new
/home/ dir. im hoping that the cp utility is flawless and/or
that the drive to this duo/dual-CPU computer is good. I'm
buying a new Dell 4-CPU new. Should have everything setup in a
couple weeks. Oh, and in addition to klinebak, there are
fragments of my backup systems all over the place.
Higgsbo, give me strength!
> Magdeburg, Germany
> Happy FreeBSD user since 4.0
> Andra moi ennepe, Mousa, ...
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