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Date: Wed, 22 Sep 1999 12:24:44 +0100 (BST)
From: "Owen M. Astley" <oma1000@cam.ac.uk>
X-Sender: oma1000@pol1.phy.cam.ac.uk
To: Bart Schaefer <schaefer@candle.brasslantern.com>
cc: Clint Olsen <olsenc@ichips.intel.com>, zsh-workers@sunsite.auc.dk
Subject: Re: #!/path/to/arch-indep/zsh -f
In-Reply-To: <990922091316.ZM16279@candle.brasslantern.com>
Message-ID: <Pine.OSF.3.96.990922122005.5737A-100000@pol1.phy.cam.ac.uk>
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> Most (I don't know if I can say "all") operating systems won't do two
> levels of indirection via #! lines.  That is, if the thing on the #!
> line is not itself a binary in executable format, the OS will not
> recognize yet another #! line and launch still another interpreter.

$ <test.sh
#!/u/pol1b/oma1000/bin/zsh

echo f
$ head -n 1 /u/pol1b/oma1000/bin/zsh
#!/bin/sh -
$ ./test.sh
f
$ reportzsh 
zsh-3.0.6 dec-alpha-osf4.0

So not on this system.  
I thought that most (all) modern operating systems recognise #!
as a magic number in exec()?

Owen