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SubjectRe: [BUG?] binfmt_script: interpreted interpreter doesn't work
Hi Pozsar,

On Sun, Sep 15, 2002 at 07:15:38PM +0200, Pozsar Balazs wrote:
> This may well not be bug, rather an intended feature, but please enlighten
> me why the following doesn't work:
> I have two scripts:
> /home/pozsy/a:
> #!/bin/sh
> echo "Hello from a!"
> /home/pozsy/b:
> #!/home/pozsy/a
> echo "hello from b!"
> Both of them has +x permissions.
> But I cannot execute the /home/pozsy/b script:
> Isn't this "indirection" allowed?

Right, this isn't allowed to avoid eating kernel resources
without getting anything done.

Solution is to always compile an interpreter or to write
a wrapper in C, which is compiled and calls the perl interpreter
with your perl script. This wrapper would be ANSI-C with really
basic POSIX extensions and should thus be as portable as perl ;-)

So you hide the indirection from the kernel this way.

Of course you now define the wrapper as the interpreter for your
perl scripts.

Hope that helps.


Ingo Oeser
Science is what we can tell a computer. Art is everything else. --- D.E.Knuth
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