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RE: 1.5.24: data corruption problem with popen and gzip on a text mounted filesystem
- From: "Dave Korn" <dave dot korn at artimi dot com>
- To: <cygwin at cygwin dot com>
- Date: Mon, 23 Jul 2007 19:09:30 +0100
- Subject: RE: 1.5.24: data corruption problem with popen and gzip on a text mounted filesystem
- References: <46A4BC14.1050603@merl.com> <46A4ED4A.9060303@merl.com>
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
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