Date: Wed, 12 Sep 2012 08:14:30 -0700 From: Waitman Gobble <gobble.wa@gmail.com> To: Gary Kline <kline@thought.org> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org>, kpneal@pobox.com Subject: Re: cksum entire dir?? Message-ID: <CAFuo_fxt9%2Bu=P5Ns8da0Tn5prDC-xvXbB9gfTGMACh6x5WLwGw@mail.gmail.com> In-Reply-To: <20120912050658.GA11860@ethic.thought.org> References: <20120911213804.GA9817@ethic.thought.org> <20120912011443.5df17cf2.freebsd@edvax.de> <20120912002408.GA10496@ethic.thought.org> <20120912011813.GA2305@neutralgood.org> <20120912050658.GA11860@ethic.thought.org>
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On Sep 11, 2012 10:10 PM, "Gary Kline" <kline@thought.org> wrote:
>
> On Tue, Sep 11, 2012 at 09:18:13PM -0400, kpneal@pobox.com wrote:
> > On Tue, Sep 11, 2012 at 05:24:08PM -0700, Gary Kline wrote:
> > > On Wed, Sep 12, 2012 at 01:14:43AM +0200, Polytropon wrote:
> > > > 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.
> >
> > > 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 there isn't anything that can compare entire dirs, it looks
like
> > > it's time to hack a small program. tx, polyt.
> >
> > Unix was originally created to do text manipulation. No need for a new
> > program when you can do it from the command line.
> >
> > cd dir1 ; cksum * | sort > /tmp/dir1-cksum
> > cd dir2 ; cksum * | sort > /tmp/dir2-cksum
> >
> > diff /tmp/dir?-cksum
> >
> > Don't forget to remove temporary files when you are done.
> >
> > Other useful commands:
> > cut
> > paste
> >
> > You can use awk to pull out and rearrange columns:
> > cksum * | awk '{ print $3, $1, $2; }' | sort
> >
> > This gives you a little easier diff in case you do have changes.
> >
> > Friendly tip: if you did comparisons by hand for 12 hours then you
> > may have missed something.
>
>
> no, it was several other tasks that I had t o do very carefully
> by hand. I was going to write an awk script. I figured there
> were others ways.
>
> my desktop is a flavor of linux that i don't know. it seems to
be
> lacking in many common unix binaries; md5 is one that I spent
> an hour checking. zero.
>
> your first way works very well and will serve. many thanks.
> now I can listen to:
>
> /Lectures on the Critique of Pure Reason
>
> which is now safely in my home directory in several mp3 files.
>
> >
> > It's a real shame Unix doesn't have a really good tool for comparing
> > two directory trees. You can use 'diff -r' (even on binaries), but that
> > fails if you have devices, named pipes, or named sockets in the
> > filesystem. And diff or cksum don't tell you if symlinks are different.
> > Plus you may care about file ownership, and that's where the stat
> > command comes in handy.
>
>
> right. these are things you only discover the hard way.
> >
> > Not that I'm volunteering, mind you. I ended up instead writing a
> > Python script to do copies of filesystems off of old machines I'm
> > putting to pasture. It's amazing how badly old versions of dump and
> > tar behave.
>
>
> REmember CP/M and MP/M? I started out with a dual 8085/80888 box
> with MP/Mand wrote notes and letters that were stored on 8"
> twin floppies. circa mid-1980's I transferred a boatload of
floppies
> onto my 386 with SVR2 with uucp and others C programs on the 8088
box.
> it took forever and things keep faulting, but I got it done.
> eventually.
>
> >
oh yeah, I remember the Kaypro =ABportable=BB which was as big as a sampson=
ite,
and despite being built like a tank probably couldn't handle a wrangling by
a gorilla.
Waitman Gobble
San Jose California
--
> > Kevin P. Neal http://www.pobox.com/~kpn/
> >
> > "I like being on The Daily Show." - Kermit the Frog, Feb 13 2001
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