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From: chris@mimsy.UUCP (Chris Torek)
Newsgroups: comp.unix.wizards
Subject: Re: shell stderr in popen()
Message-ID: <7932@mimsy.UUCP>
Date: Mon, 10-Aug-87 11:36:17 EDT
Article-I.D.: mimsy.7932
Posted: Mon Aug 10 11:36:17 1987
Date-Received: Tue, 11-Aug-87 06:08:34 EDT
References: <4511@sunybcs.UUCP> <8708100615.AA06203@ephemeral.ai.toronto.edu>
Distribution: na
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 16

>In article <7928@mimsy.UUCP> I suggest:
># 	(void) sprintf(expandcmd, "sh -c '%s' 2>/dev/null", command);
># 	iop = popen(expandcmd, "r");

In article <8708100615.AA06203@ephemeral.ai.toronto.edu> rayan@utegc.UUCP
writes:
>Seems too expensive. Try
>
>	popen("exec 2> /dev/null ; /usr/bin/mynewcommand -flags", "r");

This is a good idea.  Unfortunately, it does not work; the shell has
already set its own standard error to another descriptor, so that it
can still print errors.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7690)
Domain:	chris@mimsy.umd.edu	Path:	seismo!mimsy!chris