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Subject: Re: /dev/stderr invalid with nested and chained redirections
To: cygwin@cygwin.com
References: <76d702928e575369da13a1fce2fe4291.squirrel@mail.schneiderp.de>
From: Marco Atzeri <marco.atzeri@gmail.com>
Message-ID: <7532f52a-89de-9fde-e8a6-b93aad54f7df@gmail.com>
Date: Mon, 10 Jul 2017 09:39:12 +0200
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On 10/07/2017 09:18, cygwin-mailinglist wrote:
> I have a script which does not find /dev/stderr when its stderr is
> redirected and piped. The minimal reproduction follows below. This is a
> verbatim copy from the terminal with edited-in comments prefixed with
> hashes.
>
> $ uname -a
> CYGWIN_NT-6.1-WOW xxxxxxxx 2.8.1(0.312/5/3) 2017-07-03 14:06 i686 Cygwin
> $ bash --version
> GNU bash, version 4.4.12(3)-release (i686-pc-cygwin)
> [...]
> ########################################################
> $ cat say-something.sh
> #!/bin/sh
> echo something > /dev/stderr
> ########################################################
>
> ############### This is the error:
> $ (x=$(./say-something.sh 2> /dev/stderr)) |& cat
> ./say-something.sh: line 2: /dev/stderr: No such file or directory

I miss the need to redirect stderr "2>" to itself.


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