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From: "Dave Korn" <dave DOT korn AT artimi DOT com>
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References: <46A4BC14 DOT 1050603 AT merl DOT com> <46A4ED4A DOT 9060303 AT merl DOT com>
Subject: RE: 1.5.24: data corruption problem with popen and gzip on a text  mounted filesystem
Date: Mon, 23 Jul 2007 19:09:30 +0100
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On 23 July 2007 19:03, Hugh Secker-Walker wrote:

> Interestingly, I had tried popen("gzip | dd of=outputfile", "wb") as a
> lower-level way to avoid what I guessed was a problem with gzip using
> the stdout.  The dd attempt didn't work.  This failure suggests to me
> that dd and gzip experience a similar problem in this popen() context,
> a problem that cat somehow avoids.


  Yeh, 'cat' is special: it absolutely guaranteed 100% always always always
uses bin mode, regardless of mount type, stdio mode, shell
direction/redirection/misdirection and indeed anything else at all.  It's your
get-out-of-jail-free card intended exactly for situations just like this one.

    cheers,
      DaveK
-- 
Can't think of a witty .sigline today....


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