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Date: Thu, 04 Oct 2018 18:02:03 +0200
Message-ID: <bb7dfc32e67366d58d10eb4dc2eda7f5@smtp-cloud7.xs4all.net>
From: Houder <houder@xs4all.nl>
Reply-To: cygwin@cygwin.com
To: cygwin@cygwin.com
Subject: Re: grep < fifo fails
References: <d56a12c77ecc441ca7dc2e8e1862145c@prosa.dk> <d8e9dbf61b6299cae6db6da3a25eabb8@smtp-cloud9.xs4all.net>
In-Reply-to: <d8e9dbf61b6299cae6db6da3a25eabb8@smtp-cloud9.xs4all.net>
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On Wed, 03 Oct 2018 20:46:11, Houder wrote:
> On Wed, 3 Oct 2018 15:37:14, Ole Tange wrote:
> > This works:
> > 
> > $ mkfifo fifo
> > $ echo > fifo & grep .  fifo
> > [1] 10232
> > [1]+  Done                    echo > fifo
> > 
> > But this fails:
> > 
> > $ echo > fifo & grep . < fifo
> > [1] 11756
> > grep: (standard input): Invalid argument
> > [1]+  Done                    echo > fifo
> > 
> > I see the same behavior on MINGW, but I do not see the same behavior on GNU=
> > /Linux.

My apologies. Did not read you post as careful as I should have the first time.
You are correct: grep is in error here.

(utilities from e.g. coreutils do not show this error in the context above)

Regards,
Henri


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