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From: arisawa@ar.aichi-u.ac.jp
Subject: Re: [9fans] #!/bin/foo
Date: Sat, 16 Jul 2005 07:08:21 +0900
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
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> It is, but it's to prevent an endless loop....  Imagine if you had a
> script named /usr/someone/blah that started, ``#!/usr/someone/blah''.
> It would try to recursively start itself as a script, and the kernel
> would (potentially) go into an endless loop.

Thanks for your interest.

Yes I know that, but I have experienced such an endless loop
using only binary executables. the kernel crushed.
of course the logic was not so simple.

> Under Unix, you could probably get around it by doing something like,
> #!/usr/bin/env script-to-use-as-interpreter.  Some similar wrapper
> could probably be written for Plan 9 to achieve the same effect.
>

that is easy but dirty.

Kenji Arisawa