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From: mkhaw@teknowledge-vaxc.ARPA (Mike Khaw)
Newsgroups: comp.unix.questions
Subject: Re: \"+\" filename -> /bin/sh !
Message-ID: <18062@teknowledge-vaxc.ARPA>
Date: Mon, 19-Oct-87 14:31:03 EDT
Article-I.D.: teknowle.18062
Posted: Mon Oct 19 14:31:03 1987
Date-Received: Tue, 20-Oct-87 06:55:01 EDT
References: <3351@sol.ARPA>
Organization: Teknowledge, Inc., Palo Alto CA
Lines: 34

in article <3351@sol.ARPA>, ken@cs.rochester.edu (Ken Yap) says:
> 
> Since + is a non-binary, you are effectively doing /bin/sh +.  Try
> this:
> 
> 	/bin/sh +
> 
> and get an interactive sh. In fact any argument starting with +
> will get you the same result.
> 
> My guess is that sh discards arguments starting with + so effectively
> you are doing just /bin/sh. This is on SunOS 3.4.
> 
> 	Ken

On Ultrix 1.2, from either /bin/csh or /bin/sh I get:

	+: +: cannot open

On Sun OS 3.4:

	csh% /bin/sh +
	+: Command not found

	sh$ /bin/sh +
	sh$

On Sun OS 3.2, both csh and sh give you a /bin/sh subprocess.

Mike Khaw
-- 
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