Newsgroups: comp.std.c
Path: utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: exit codes (was: Identifier length?)
Message-ID: <1989Mar24.224444.17617@utzoo.uucp>
Organization: U of Toronto Zoology
References: <627@maxim.ERBE.SE> <1989Mar16.171213.21210@utzoo.uucp> <6161@bsu-cs.UUCP> <1989Mar17.175939.1226@utzoo.uucp> <6212@bsu-cs.UUCP> <12111@haddock.ima.isc.com> <6268@bsu-cs.UUCP> <9902@smoke.BRL.MIL> <6272@bsu-cs.UUCP> <12143@haddock.ima.isc.com>
Date: Fri, 24 Mar 89 22:44:44 GMT

In article <12143@haddock.ima.isc.com> suitti@haddock.ima.isc.com (Stephen Uitti) writes:
>->...most existing C programs exit with a code of 0, 1, or 2 and that
>->0=success, nonzero=failure is a common convention):
>
>What does "2" commonly mean?  "Other kind of error?" ...

The usual custom is that 0 means success, 1 means failure, 2 means it was
invoked improperly (e.g. unknown option) and hence didn't even try.
-- 
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