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
> content.
> 


        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!
> 
> 
> -- 
> Polytropon
> Magdeburg, Germany
> Happy FreeBSD user since 4.0
> Andra moi ennepe, Mousa, ...
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