Date: Sat, 13 May 2006 21:23:37 +1000
From: CaT <cat@zip.com.au>
To: Mark Rosenstand <mark@borkware.net>
Cc: Arjan van de Ven <arjan@infradead.org>, linux-kernel@vger.kernel.org
Subject: Re: Executable shell scripts
Message-ID: <20060513112337.GB4288@zip.com.au>
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On Sat, May 13, 2006 at 01:03:24PM +0200, Mark Rosenstand wrote:
> It doesn't:
> 
> bash-3.00$ cat << EOF > test
> > #!/bin/sh
> > echo "yay, I'm executing!"
> > EOF
> bash-3.00$ chmod 111 test
> bash-3.00$ ./test
> /bin/sh: ./test: Permission denied

Obviously.

It executes the script, finds that it needs an interpreter and runs /bin/sh
as specified telling it to run the script. /bin/sh though needs to read
the script in and since the script has no read permissions it fails.
Hence permission denied.

-- 
    "To the extent that we overreact, we proffer the terrorists the
    greatest tribute."
    	- High Court Judge Michael Kirby
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