Date: Thu, 30 Sep 2004 15:16:21 +0200 From: =?iso-8859-2?q?S=B3awek_=AFak?= <zaks@prioris.mini.pw.edu.pl> To: "David G. Lawrence" <dg@dglawrence.com> Cc: freebsd-current@freebsd.org Subject: Re: Bug in #! processing Message-ID: <86y8irx5ga.fsf@thirst.unx.era.pl> Resent-Message-ID: <86mzz7x2cr.fsf@thirst.unx.era.pl> In-Reply-To: <20040930124810.GA17792@nexus.dglawrence.com> (David G. Lawrence's message of "Thu, 30 Sep 2004 05:48:10 -0700") References: <861xgm5ltz.fsf@thirst.unx.era.pl> <20040928194853.GT2493@submonkey.net> <86k6ud2t6t.fsf@thirst.unx.era.pl> <20040929131136.GA2493@submonkey.net> <415AB9BF.1070003@gamersimpact.com> <86is9wx8qp.fsf@thirst.unx.era.pl> <20040930124810.GA17792@nexus.dglawrence.com>
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"David G. Lawrence" <dg@dglawrence.com> writes:
>> What circular reference? Could you elaborate? The algorithm goes like this:
>>
>> 1. skip all space till #!
>
> The #! is required to be in the first two bytes of the file, so there
> can't be any spaces before it.
Oh. Thus in following script:
thirst<zaks>(1950)% cat tst.sh
#!/bin/no-such-file
ps -lp $$
Which generates following output.
thirst<zaks>(1949)% ./tst.sh /tmp
UID PID PPID CPU PRI NI VSZ RSS MWCHAN STAT TT TIME COMMAND
1001 31645 31278 0 8 0 1636 1024 wait S+ p5 0:00.00 sh ./tst.sh
the interpreter is assumed to be /bin/sh. That's fine with me.
> I wrote the code you guys are talking about, although I had nothing to do
> with the commit in rev 1.21. I don't have an opinion on that other than
> it's been this way in FreeBSD for a long time and I share Ceri's concern
> that changing it will affect some people.
By no means I wish to force anyone to fix their scripts for 5.3
release. Period. I would only like to use Allegro CL in scripts, which
unfortunately considers -#! valid in argument list and acts accordingly on
all platforms besides FreeBSD. Some (in)compatibility shim would be
great. Please! :)
/S
--
Sławek Żak : UNIX Systems Administrator : PTC Sp. zoo
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