Date: Tue, 11 Sep 2012 22:50:20 -0700 From: Gary Kline <kline@thought.org> To: Robert Bonomi <bonomi@mail.r-bonomi.com>, j@thought.org Cc: freebsd-questions@freebsd.org Subject: Re: cksum entire dir?? Message-ID: <20120912055020.GD11860@ethic.thought.org> In-Reply-To: <201209120255.q8C2tXvY092152@mail.r-bonomi.com> References: <20120912002408.GA10496@ethic.thought.org> <201209120255.q8C2tXvY092152@mail.r-bonomi.com>
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On Tue, Sep 11, 2012 at 09:55:33PM -0500, Robert Bonomi wrote: > > > Date: Tue, 11 Sep 2012 17:24:08 -0700 > > From: Gary Kline <kline@thought.org> > > Subject: Re: cksum entire dir?? > > > > 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/* > > > > and had to compare each file from another file I was copying from. > > it was tiresome to check each of dozens of files tho. I was here at > > desk for something obscene -- over 12 hrs. getting my new [slightly > > used:)] computer back to normal. > > If you'd say _what_ you are trying to accomplish, as distinct from > _how_ you are attempting to do things, people might be able to > suggest a "sensible" answer. > > Taking what you asked _literally_, 'tar . -cf - | cksum' answers the question. > Although 'find . -exec cat {} \; | cksum' may be closer. below, is what is easiest to script ... this was kevin's idea, simple and straight foreward. the only trick is that in several cases I have to type [[ ot alias ]] prefix strings like "/home/ethic/usr/home/kline" before I get into the breadth or depth of my directories ... > > However, if you just want to etablish that the contents of two directories > are identical, the 'diff -r -q {dir1} {dir2} might be appropriate. > >
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