[TUHS] Set-uid shell scripts

[Richard Salz]

BSD added the #! "magic number" based on a suggestion from Ken I believe.

Didn't the exec (2) manpage warn about argv[-1] being clobbered until that
was added?

On Sun, Aug 4, 2019, 4:31 PM Clem Cole <clemc at ccc.com> wrote:

>
>
> On Sun, Aug 4, 2019 at 4:18 PM Noel Chiappa <jnc at mercury.lcs.mit.edu>
> wrote:
>
>> Part of the problem is having the kernel involved in starting shell
>> scripts; convenient in some ways, but V6 etc worked fine without that
>> 'feature'.
>>
> That's a tough call.  I have mixed opinions about it as a feature.  I
> kind of like the user/kernel interface really, really thin and unadorned.
>
> Adding, it certainly made allowing multiple interpreters to be supported
> much easier; but as you say it opens a new can of worms.   Given the later
> proliferation of what bwk or Jon Bently once referred too as 'little
> languages' (awk, perl, tcl, and sigh eventually python), it was probably a
> good feature.
>
> But as you said, v6 worked fairly well without it.
>
> Clem
>
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