From owner-freebsd-questions  Tue Jul 13 21:30:10 1999
Delivered-To: freebsd-questions@freebsd.org
Received: from kot.ne.mediaone.net (kot.ne.mediaone.net [24.218.15.190])
	by hub.freebsd.org (Postfix) with ESMTP id 47B5514D8D
	for <questions@freebsd.org>; Tue, 13 Jul 1999 21:30:06 -0700 (PDT)
	(envelope-from mi@kot.ne.mediaone.net)
Received: (from mi@localhost)
	by kot.ne.mediaone.net (8.9.3/8.9.1) id AAA30964
	for questions@freebsd.org; Wed, 14 Jul 1999 00:30:05 -0400 (EDT)
From: Mikhail Teterin <mi@kot.ne.mediaone.net>
Message-Id: <199907140430.AAA30964@kot.ne.mediaone.net>
Subject: result of pclose
To: questions@freebsd.org
Date: Wed, 14 Jul 1999 00:30:05 -0400 (EDT)
X-Mailer: ELM [version 2.4ME+ PL49 (25)]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-questions@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

The following simple program:

	#include <stdio.h>
	main() {
		FILE *pipe;
		int code;

		pipe = popen("/usr/bin/false", "w");
		code = pclose(pipe);
		printf("/usr/bin/false's result was %d\n", code);

		pipe = popen("/usr/bin/true", "w");
		code = pclose(pipe);
		printf("/usr/bin/true's result was %d\n", code);
	}

Produces:
	/usr/bin/false's result was 256
	/usr/bin/true's result was 0

I checked and rechecked -- false(1) returns 1

	mi@guest:/tmp (1099) false
	mi@guest:/tmp (1100) echo $status
	1

According to pclose(3), its result must be the exit code of the process.
Is this a bug, or do I misunderstand the manual? Thanks!

	-mi


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message