From mboxrd@z Thu Jan  1 00:00:00 1970
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: /bin/sh portability question
Date: Fri, 23 Sep 2005 13:00:45 -0700
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References: <20050923075058.GA25473@bohr.gbar.dtu.dk> <43345C17.7060402@zytor.com> <20050923195706.GV27375@ca-server1.us.oracle.com>
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Cc: Peter Eriksen <s022018@student.dtu.dk>, git@vger.kernel.org
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To: Joel Becker <Joel.Becker@oracle.com>
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Joel Becker wrote:
> On Fri, Sep 23, 2005 at 12:48:39PM -0700, H. Peter Anvin wrote:
> 
>>Peter Eriksen wrote:
>>
>>>     path=$(dirname $0)
>>>...
>>>     ./git.sh: syntax error at line 4: `path=$' unexpected
>>
>>I think $(foo) is required by POSIX.
> 
> 
> 	I believe that Solaris and others (AIX IIRC) have /bin/sh linked
> to /bin/ksh, and it behaves as the POSIX shell when run as /bin/ksh, but
> behaves as a much more true-to-bourne shell when run as /bin/sh.
> 

But "sh" is required to be the POSIX shell (XSH page 850.)

Thus, they might have some braindamage where /usr/bin/sh is the POSIX 
shell and /bin/sh is a braindead shell.  Sigh.

	-hpa