From: H. Peter Anvin <hpa@zytor.com>
Date: Fri, 23 Sep 2005 20:00:45 GMT
Subject: Re: /bin/sh portability question
Message-ID: <43345EED.5060706@zytor.com>
In-Reply-To: <20050923195706.GV27375@ca-server1.us.oracle.com>

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