Received: (at 23950) by debbugs.gnu.org; 13 Jul 2016 12:16:18 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed Jul 13 08:16:18 2016 Received: from localhost ([127.0.0.1]:49133 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1bNJ5O-0008AE-1T for submit <at> debbugs.gnu.org; Wed, 13 Jul 2016 08:16:18 -0400 Received: from mga01.intel.com ([192.55.52.88]:52199) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <david.s.gordon@HIDDEN>) id 1bNJ5M-0008A1-64 for 23950 <at> debbugs.gnu.org; Wed, 13 Jul 2016 08:16:17 -0400 Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga101.fm.intel.com with ESMTP; 13 Jul 2016 05:16:04 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,357,1464678000"; d="scan'208";a="845476813" Received: from dsgordon-linux2.isw.intel.com (HELO [10.102.226.88]) ([10.102.226.88]) by orsmga003.jf.intel.com with ESMTP; 13 Jul 2016 05:16:04 -0700 Subject: Re: [bug-diffutils] bug#23950: An enhancement request To: "Dr. Randall Fisher" <randall.fisher@HIDDEN>, 23950 <at> debbugs.gnu.org References: <CAKauvBKnCf3WcMb22NJPbVOqBZeYar+0iTYEcHnyP=kWSAD1bA@HIDDEN> From: Dave Gordon <david.s.gordon@HIDDEN> Organization: Intel Corporation (UK) Ltd. - Co. Reg. #1134945 - Pipers Way, Swindon SN3 1RJ Message-ID: <57863102.6020106@HIDDEN> Date: Wed, 13 Jul 2016 13:16:02 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: <CAKauvBKnCf3WcMb22NJPbVOqBZeYar+0iTYEcHnyP=kWSAD1bA@HIDDEN> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Score: -6.3 (------) X-Debbugs-Envelope-To: 23950 X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -6.3 (------) On 11/07/16 23:41, Dr. Randall Fisher wrote: > Hi, > > I use "diff -r" when comparing a directory tree to a copy that I have made > when the storage media is questionable. There are often broken symlinks in > the original (usually a backup from some defunct machine). When I do the > diff, I get thousands of messages along the lines of : > > diff: gecko-clone-100714/var/X11R6/lib/xkb/xkbcomp: No such file or > directory > diff: /home2/Backups/gecko-clone-100714/var/X11R6/lib/xkb/xkbcomp: No such > file or directory > > There are also messages along the lines of: > > X/afifo is a fifo while Y/afifo is a fifo > ... or a socket or a character special, etc. > > These aren't really useful in this context and bury any really important > errors. > > Could you add switches to : > 1. Not dereference symlinks, but compare the symlink itself (i.e. no > message if they point to the same non-existant place)? > 2. Not report the "this is an orange while that is an orange" messages? > > Thank you, > Randy Fisher Maybe diff(1) isn't the right tool? Have you considered using rsync(1) with the -vn options (verbose reporting, no actual transfers) to see what differs between the two trees? If you doubt the integrity of the storage medium, you might want to add "-C" (use checksums) as well, thus $ rsync -aHvCn src/ dest/ sending incremental file list ./ bxt_dmc_ver1.bin -> bxt_dmc_ver1_07.bin sent 510 bytes received 22 bytes 1,064.00 bytes/sec total size is 404,951 speedup is 761.19 (DRY RUN) The output should list every directory checked (lines ending /) plus those nondirectory objects which differ between src and dest (lines not ending /) -- the latter are presumably what you're interested in. HTH, .Dave.
bug-diffutils@HIDDEN:bug#23950; Package diffutils.
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--001a1146dcb0c05b9b053763d89a
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Hi,
I use "diff -r" when comparing a directory tree to a copy that I have made
when the storage media is questionable. There are often broken symlinks in
the original (usually a backup from some defunct machine). When I do the
diff, I get thousands of messages along the lines of :
diff: gecko-clone-100714/var/X11R6/lib/xkb/xkbcomp: No such file or
directory
diff: /home2/Backups/gecko-clone-100714/var/X11R6/lib/xkb/xkbcomp: No such
file or directory
There are also messages along the lines of:
X/afifo is a fifo while Y/afifo is a fifo
... or a socket or a character special, etc.
=E2=80=8BThese aren't really useful in this context and bury any really imp=
ortant
errors.=E2=80=8B
Could you add switches to :
1. Not dereference symlinks, but compare the symlink itself (i.e. no
message if they point to the same non-existant place)?
2. Not report the "this is an orange while that is an orange" messages?
=E2=80=8BThank you,
Randy Fisher=E2=80=8B
--=20
Randall Fisher, Ph.D.
randall.fisher@HIDDEN
randall.fisher@HIDDEN
--001a1146dcb0c05b9b053763d89a
Content-Type: text/html; charset=UTF-8
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">Hi,=
<br><br></div><div class=3D"gmail_default" style=3D"font-size:small">I use =
"diff -r" when comparing a directory tree to a copy that I have m=
ade when the storage media is questionable.=C2=A0 There are often broken sy=
mlinks in the original (usually a backup from some defunct machine).=C2=A0 =
When I do the diff, I get thousands of messages along the lines of :<br><br=
>diff: gecko-clone-100714/var/X11R6/lib/xkb/xkbcomp: No such file or direct=
ory<br>diff: /home2/Backups/gecko-clone-100714/var/X11R6/lib/xkb/xkbcomp: N=
o such file or directory<br><br></div><div class=3D"gmail_default" style=3D=
"font-size:small">There are also messages along the lines of:<br><br></div>=
<div class=3D"gmail_default" style=3D"font-size:small">X/afifo is a fifo wh=
ile Y/afifo is a fifo<br></div><div class=3D"gmail_default" style=3D"font-s=
ize:small">... or a socket or a character special, etc.<br clear=3D"all"></=
div><br><div class=3D"gmail_default" style=3D"font-size:small">=E2=80=8BThe=
se aren't really useful in this context and bury any really important e=
rrors.=E2=80=8B<br><br></div><div class=3D"gmail_default" style=3D"font-siz=
e:small">Could you add switches to :<br></div><div class=3D"gmail_default" =
style=3D"font-size:small">=C2=A0=C2=A0=C2=A0 1. Not dereference symlinks, b=
ut compare the symlink itself (i.e. no message if they point to the same no=
n-existant place)?<br></div><div class=3D"gmail_default" style=3D"font-size=
:small">=C2=A0=C2=A0=C2=A0 2. Not report the "this is an orange while =
that is an orange" messages?<br></div><br><div class=3D"gmail_default"=
style=3D"font-size:small">=E2=80=8BThank you,<br><br></div><div class=3D"g=
mail_default" style=3D"font-size:small">Randy Fisher=E2=80=8B</div><br>-- <=
br><div class=3D"gmail_signature" data-smartmail=3D"gmail_signature">Randal=
l Fisher, Ph.D.<br><a href=3D"mailto:randall.fisher@HIDDEN" target=3D"_bl=
ank">randall.fisher@HIDDEN</a><br><a href=3D"mailto:randall.fisher@HIDDEN=
g" target=3D"_blank">randall.fisher@HIDDEN</a><br></div>
</div>
--001a1146dcb0c05b9b053763d89a--
"Dr. Randall Fisher" <randall.fisher@HIDDEN>:bug-diffutils@HIDDEN.
Full text available.bug-diffutils@HIDDEN:bug#23950; Package diffutils.
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