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Date: Wed, 14 Jul 1999 11:51:58 +0100
From: Ben Smithurst <ben@scientia.demon.co.uk>
To: Mikhail Teterin <mi@kot.ne.mediaone.net>
Cc: questions@freebsd.org
Subject: Re: result of pclose
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Mikhail Teterin wrote:

> Produces:
> 	/usr/bin/false's result was 256
> 	/usr/bin/true's result was 0
>=20
> I checked and rechecked -- false(1) returns 1

Yes, see wait(2). The value returned is (exit_code << 8) with the low 7
bits specifying the signal number the process died from and the other bit
specifying if the process dumped core or not. Just use (code >> 8) to get
the exit status, or see the W* macros documented in wait(2).

--=20
Ben Smithurst            | PGP: 0x99392F7D
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