From: Pozsar Balazs <pozsy@sch.bme.hu>
To: Paul Flinders <P.Flinders@ftel.co.uk>
Cc: Jeff Mcadams <jeffm@iglou.com>,
Rik van Riel <riel@conectiva.com.br>,
John Kodis <kodis@mail630.gsfc.nasa.gov>,
"Richard B. Johnson" <root@chaos.analogic.com>,
linux-kernel <linux-kernel@vger.kernel.org>, <bug-bash@gnu.org>
Subject: Re: binfmt_script and ^M
Date: Mon, 5 Mar 2001 19:58:52 +0100 (MET) [thread overview]
Message-ID: <Pine.GSO.4.30.0103051954420.25495-100000@balu> (raw)
In-Reply-To: <3AA3BC4E.FA794103@ftel.co.uk>
On Mon, 5 Mar 2001, Paul Flinders wrote:
> Jeff Mcadams wrote:
>
> > Also sprach Rik van Riel
> > >On Mon, 5 Mar 2001, John Kodis wrote:
> > >> On Mon, Mar 05, 2001 at 08:40:22AM -0500, Richard B. Johnson wrote:
> > >> > Somebody must have missed the boat entirely. Unix does not, never
> > >> > has, and never will end a text line with '\r'.
> >
> > >> Unix does not, never has, and never will end a text line with ' ' (a
> > >> space character) or with \t (a tab character). Yet if I begin a
> > >> shell script with '#!/bin/sh ' or '#!/bin/sh\t', the training white
> > >> space is striped and /bin/sh gets exec'd. Since \r has no special
> > >> significance to Unix, I'd expect it to be treated the same as any
> > >> other whitespace character -- it should be striped, and /bin/sh
> > >> should get exec'd.
> >
> > >Makes sense, IMHO...
> >
> > That only makes sense if:
> > #!/bin/shasdf\n
> > would also exec /bin/sh.
>
> POSIX disagrees with you (accd to the manual page)
>
> $ man isspace
> ....
> isspace()
> checks for white-space characters. In the "C" and
> "POSIX" locales, these are: space, form-feed
> ('\f'), newline ('\n'), carriage return ('\r'),
> horizontal tab ('\t'), and vertical tab ('\v').
And what does POSIX say about "#!/bin/sh\r" ?
In other words: should the kernel look for the interpreter between the !
and the newline, or [the first space or newline] or the first whitespace?
IMHO, the first whitespace. Which means that "#!/bin/sh\r" should invoke
/bin/sh. (though it is junk).
--
next prev parent reply other threads:[~2001-03-05 19:03 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-02-27 13:03 binfmt_script and ^M Ivo Timmermans
2001-02-27 13:44 ` Alan Cox
2001-02-27 13:47 ` Ivo Timmermans
2001-02-27 13:54 ` Alan Cox
2001-02-27 14:36 ` Rogier Wolff
2001-02-28 20:10 ` Erik Hensema
2001-03-01 12:04 ` Pavel Machek
2001-03-05 13:20 ` Jan Nieuwenhuizen
2001-03-05 13:37 ` Andreas Schwab
2001-03-05 13:40 ` Richard B. Johnson
2001-03-05 14:55 ` John Kodis
2001-03-05 15:25 ` Rik van Riel
2001-03-05 15:59 ` Jeff Mcadams
2001-03-05 16:18 ` Paul Flinders
2001-03-05 17:12 ` Andreas Schwab
2001-03-05 19:54 ` Paul Flinders
2001-03-05 20:09 ` Paul Flinders
2001-03-06 10:41 ` Andreas Schwab
2001-03-06 12:33 ` Paul Flinders
2001-03-06 14:45 ` Laramie Leavitt
2001-03-06 15:12 ` Sean Hunter
2001-03-06 15:37 ` David Weinehall
2001-03-06 21:10 ` Thorsten Glaser Geuer
[not found] ` <20010308130145.O20737@dev.sportingbet.com>
2001-03-09 16:52 ` Thorsten Glaser Geuer
2001-03-06 15:53 ` James A. Sutherland
2001-03-07 8:29 ` Ondrej Sury
2001-03-06 16:59 ` Xavier Bestel
2001-03-06 18:17 ` binfmt_script and ^M (historical note) Don Dugger
2001-03-05 18:58 ` Pozsar Balazs [this message]
2001-03-05 20:39 ` binfmt_script and ^M Robert Read
2001-03-05 21:05 ` Pozsar Balazs
2001-03-05 22:34 ` Robert Read
2001-03-06 15:14 ` Jeff Coy
2001-03-06 18:15 ` Peter Samuelson
2001-03-06 18:36 ` Jeff Coy
2001-03-06 20:26 ` John Kodis
2001-03-06 20:43 ` Andreas Schwab
2001-03-06 2:18 ` Richard B. Johnson
2001-03-05 15:50 ` Richard B. Johnson
2001-03-05 16:53 ` H. Peter Anvin
2001-03-05 21:48 ` Dr. Kelsey Hudson
2001-03-06 18:19 ` Peter Samuelson
2001-03-06 21:04 ` Dr. Kelsey Hudson
2001-03-05 14:56 ` [PATCH]: print missing interpreter name [Was: Re: binfmt_script and ^M] Jan Nieuwenhuizen
2001-03-05 15:59 ` Richard B. Johnson
2001-03-05 20:18 ` [PATCH #3]: " Jan Nieuwenhuizen
2001-03-05 16:37 ` binfmt_script and ^M Erik Hensema
2001-03-05 22:13 ` Pavel Machek
2001-02-27 13:42 Heusden, Folkert van
2001-02-27 13:38 ` Ivo Timmermans
2001-02-27 19:20 ` Jamie Lokier
2001-02-27 19:59 ` Don Dugger
2001-02-27 21:35 ` Rogier Wolff
2001-02-27 14:01 ` Bruce Harada
2001-02-27 13:53 Heusden, Folkert van
2001-02-27 14:26 ` Alistair Riddell
2001-02-27 23:22 ` David
2001-02-28 14:07 ` Jamie Lokier
2001-02-28 22:23 ` H. Peter Anvin
2001-03-05 19:14 Jesse Pollard
2001-03-06 20:54 ` Thorsten Glaser Geuer
2001-03-05 21:15 Andries.Brouwer
2001-03-06 13:55 Jesse Pollard
2001-03-06 14:54 ` Andreas Schwab
2001-03-06 15:56 Jesse Pollard
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