Re: crc not installed but rsync using it? ...

From	Dan Ritter <dsr@randomstring.org>
Newsgroups	linux.debian.user
Subject	Re: crc not installed but rsync using it? ...
Date	2020-09-25 15:00 +0200
Message-ID	<ASVup-8vd-1@gated-at.bofh.it> (permalink)
References	<ASzax-3wT-11@gated-at.bofh.it> <ASzDA-3H9-15@gated-at.bofh.it> <ASBP4-4UD-3@gated-at.bofh.it> <ASEad-6qV-1@gated-at.bofh.it> <ASUoF-7Tw-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Albretch Mueller wrote: 
> On 9/24/20, Sven Hartge <sven@svenhartge.de> wrote:
> 
> > Why do you think you need to do this? What do you hope to achieve by
> > doing this?
> 
>  I have losts of (not necessarily all) text files (say in the 10 of
> thousands) in various directories which I need to process in a batch,
> but before I do that I want to make sure that I get a baseline of the
> source files. I use:
> 
>  a)  crc
>  b)  md5sum
>  c) sha###sum
> 
>  because those are three different checksum utilities based on
> different algorithms which work fast enough and offer a set signatures
> which are good enough.
> 
>  My thinking may (once again) be a bit unhinged, but I would use,
> e.g., crc because it internatlly used by rsync, which I also use in my
> code.
> 
>  So, how do you think I can improve my baselining of the source files?

If you want to defend against on-disk corruption, use ZFS.

If you want to be alerted to every change to a set of files, use
tripwire or aide. Both are packaged for Debian.

If you want to make sure that a directory full of files doesn't
change during processing, remove your write privileges for that
directory. "sudo chmod a-w DIRECTORY" will do that.

If you want to make sure of the previous case but you are going
to run a process that runs as root and you aren't sure it won't
assign itself write privileges, "sudo chattr +i DIRECTORY" will
make it immutable.

Don't reinvent the wheel.

-dsr-

Thread

crc not installed but rsync using it? ... Albretch Mueller <lbrtchx@gmail.com> - 2020-09-24 15:10 +0200
  Re: crc not installed but rsync using it? ... Greg Wooledge <wooledg@eeg.ccf.org> - 2020-09-24 15:30 +0200
  Re: crc not installed but rsync using it? ... Thomas Pircher <thp+debian@p5r.uk> - 2020-09-24 15:40 +0200
    Re: crc not installed but rsync using it? ... Greg Wooledge <wooledg@eeg.ccf.org> - 2020-09-24 18:00 +0200
    Re: crc not installed but rsync using it? ... Albretch Mueller <lbrtchx@gmail.com> - 2020-09-24 18:00 +0200
      Re: crc not installed but rsync using it? ... Thomas Pircher <thp+debian@p5r.uk> - 2020-09-24 18:30 +0200
      Re: crc not installed but rsync using it? ... Reco <recoverym4n@enotuniq.net> - 2020-09-24 19:10 +0200
        Re: crc not installed but rsync using it? ... Albretch Mueller <lbrtchx@gmail.com> - 2020-09-29 16:00 +0200
          Re: crc not installed but rsync using it? ... Dan Ritter <dsr@randomstring.org> - 2020-09-29 16:50 +0200
          Re: crc not installed but rsync using it? ... Reco <recoverym4n@enotuniq.net> - 2020-09-29 16:50 +0200
      Re: crc not installed but rsync using it? ... Sven Hartge <sven@svenhartge.de> - 2020-09-24 20:30 +0200
        Re: crc not installed but rsync using it? ... David Wright <deblis@lionunicorn.co.uk> - 2020-09-25 01:00 +0200
          Re: crc not installed but rsync using it? ... Jonathan Dowland <jon+debian-user@dow.land> - 2020-09-25 11:40 +0200
            Re: crc not installed but rsync using it? ... David Wright <deblis@lionunicorn.co.uk> - 2020-09-26 04:50 +0200
            Re: crc not installed but rsync using it? ... Albretch Mueller <lbrtchx@gmail.com> - 2020-09-29 16:00 +0200
              Re: crc not installed but rsync using it? ... Albretch Mueller <lbrtchx@gmail.com> - 2020-09-29 16:30 +0200
                Re: crc not installed but rsync using it? ... Andrei POPESCU <andreimpopescu@gmail.com> - 2020-10-01 09:00 +0200
          Re: crc not installed but rsync using it? ... Greg Wooledge <wooledg@eeg.ccf.org> - 2020-09-25 13:50 +0200
            Re: crc not installed but rsync using it? ... Albretch Mueller <lbrtchx@gmail.com> - 2020-09-25 14:00 +0200
              Re: crc not installed but rsync using it? ... Gene Heskett <gheskett@shentel.net> - 2020-09-25 15:10 +0200
                Re: crc not installed but rsync using it? ... John Hasler <jhasler@newsguy.com> - 2020-09-25 15:30 +0200
                Re: crc not installed but rsync using it? ... Gene Heskett <gheskett@shentel.net> - 2020-09-25 16:00 +0200
                Re: crc not installed but rsync using it? ... John Hasler <jhasler@newsguy.com> - 2020-09-25 18:10 +0200
                Re: crc not installed but rsync using it? ... Stefan Monnier <monnier@iro.umontreal.ca> - 2020-09-25 18:20 +0200
                Re: crc not installed but rsync using it? ... John Hasler <jhasler@newsguy.com> - 2020-09-25 19:40 +0200
                Re: crc not installed but rsync using it? ... Stefan Monnier <monnier@iro.umontreal.ca> - 2020-09-25 20:20 +0200
                Re: crc not installed but rsync using it? ... Stefan Monnier <monnier@iro.umontreal.ca> - 2020-09-26 00:10 +0200
                Re: crc not installed but rsync using it? ... John Hasler <jhasler@newsguy.com> - 2020-09-26 00:30 +0200
                Re: crc not installed but rsync using it? ... Stefan Monnier <monnier@iro.umontreal.ca> - 2020-09-26 00:50 +0200
                Re: crc not installed but rsync using it? ... Gene Heskett <gheskett@shentel.net> - 2020-09-25 19:00 +0200
                Re: crc not installed but rsync using it? ... Stefan Monnier <monnier@iro.umontreal.ca> - 2020-09-26 00:20 +0200
                Re: crc not installed but rsync using it? ... Gene Heskett <gheskett@shentel.net> - 2020-09-26 00:50 +0200
                Re: crc not installed but rsync using it? ... Stefan Monnier <monnier@iro.umontreal.ca> - 2020-09-26 01:00 +0200
                Re: crc not installed but rsync using it? ... mick crane <mick.crane@gmail.com> - 2020-09-26 02:00 +0200
                Re: crc not installed but rsync using it? ... Dan Ritter <dsr@randomstring.org> - 2020-09-26 16:50 +0200
                Re: crc not installed but rsync using it? ... Michael Stone <mstone@debian.org> - 2020-09-25 16:30 +0200
                Re: crc not installed but rsync using it? ... Gene Heskett <gheskett@shentel.net> - 2020-09-25 17:00 +0200
                Re: crc not installed but rsync using it? ... Michael Stone <mstone@debian.org> - 2020-09-25 17:30 +0200
                Re: crc not installed but rsync using it? ... Stefan Monnier <monnier@iro.umontreal.ca> - 2020-09-25 17:40 +0200
                Re: crc not installed but rsync using it? ... Andrei POPESCU <andreimpopescu@gmail.com> - 2020-09-25 17:10 +0200
                Re: crc not installed but rsync using it? ... Tixy <tixy@yxit.co.uk> - 2020-09-25 18:30 +0200
                Re: crc not installed but rsync using it? ... Brian <ad44@cityscape.co.uk> - 2020-09-25 20:00 +0200
        Re: crc not installed but rsync using it? ... Albretch Mueller <lbrtchx@gmail.com> - 2020-09-25 13:50 +0200
          Re: crc not installed but rsync using it? ... Dan Ritter <dsr@randomstring.org> - 2020-09-25 15:00 +0200
          Re: crc not installed but rsync using it? ... Michael Stone <mstone@debian.org> - 2020-09-25 15:50 +0200
            Re: crc not installed but rsync using it? ... Albretch Mueller <lbrtchx@gmail.com> - 2020-09-26 14:20 +0200
              Re: crc not installed but rsync using it? ... Michael Stone <mstone@debian.org> - 2020-09-26 22:20 +0200
                Re: crc not installed but rsync using it? ... Albretch Mueller <lbrtchx@gmail.com> - 2020-09-29 15:50 +0200
                Re: crc not installed but rsync using it? ... David Wright <deblis@lionunicorn.co.uk> - 2020-09-29 16:50 +0200
                Re: crc not installed but rsync using it? ... Fabrice BAUZAC-STEHLY <noon@mykolab.com> - 2020-10-01 13:30 +0200
          Re: crc not installed but rsync using it? ... Andrei POPESCU <andreimpopescu@gmail.com> - 2020-09-25 16:50 +0200

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