Path: utzoo!attcan!uunet!mcsun!hp4nl!star.cs.vu.nl!maart
From: maart@cs.vu.nl (Maarten Litmaath)
Newsgroups: comp.unix.questions
Subject: Re: Piping stderr in Korn and/or Bourne shell
Message-ID: <6258@star.cs.vu.nl>
Date: 7 Apr 90 06:21:26 GMT
References: <3620@hcx1.SSD.CSD.HARRIS.COM> <12541@smoke.BRL.MIL>
Sender: news@cs.vu.nl
Reply-To: maart@cs.vu.nl (Maarten Litmaath)
Organization: VU Informatika, Amsterdam, The Netherlands
Lines: 18

In article <12541@smoke.BRL.MIL>,
	gwyn@smoke.BRL.MIL (Doug Gwyn) writes:
)...
)>I want to pipe stderr to this program WITHOUT piping stdin as well.
)...
)(writes_on_stderr_and_stdout 9>&1 2>&1 1>&- | cat >stderr) 1>&9 | cat >stdout

Doesn't work.  Instead try:

	$ cat foo
	echo stdout
	echo stderr >&2
	$ (sh foo 2>&1 1>&9 | cat > stderr) 9>&1 | cat > stdout
Or:
	$ sh foo 2>&1 > stdout | cat > stderr
--
 1) Will 4.5BSD have wait5()?         |Maarten Litmaath @ VU Amsterdam:
 2) Sleep(3) should be sleep(2) again.|maart@cs.vu.nl, uunet!mcsun!botter!maart