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To: [EMAIL PROTECTED]
Subject: Policy is contradictory (I think)
From: Juliusz Chroboczek <[EMAIL PROTECTED]>
Date: 28 Feb 2001 22:52:34 +0100
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Package: debian-policy
Version: 3.1.1.1
Section 4.4 says:
> The standard shell interpreter ``/bin/sh'' may be a symbolic link to
> any POSIX compatible shell.
Section 3.3.6 gives examples for init.d scripts using ``echo -n''.
Now POSIX leaves the behaviour of ``echo'' with arguments starting
with `-' undefined (in order to accomodate both SYSV and BSD versions
of echo). In addition, POSIX allows echo to be a shell builtin.
Therefore, the script given in 3.3.6 will not work if echo is a shell
builtin with SYSV semantics. This is not a purely theoretical issue:
ksh93 behaves just like that, and can therefore not be used as /bin/sh
on a Debian system.
Solutions include:
1. making all /bin/sh scripts use printf instead of echo -n (this is
the portable way; POSIX deprecates the use of echo);
2. making all /bin/sh scripts use /bin/echo instead of echo (not
portable to other POSIX systems).
3. making all /bin/sh scripts use GNU shelltool instead of echo (yuck).
4. updating section 4.4 in policy with a caveat about echo.
Regards,
Juliusz Chroboczek
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Date: Thu, 1 Mar 2001 00:01:21 +0000
From: Julian Gilbey <[EMAIL PROTECTED]>
To: Juliusz Chroboczek <[EMAIL PROTECTED]>, [EMAIL PROTECTED]
Subject: Re: Bug#88045: Policy is contradictory (I think)
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In-Reply-To: <[EMAIL PROTECTED]>; from [EMAIL PROTECTED] on Wed, Feb 28, 2001
at 10:52:34PM +0100
Sender: Julian Gilbey <[EMAIL PROTECTED]>
Delivered-To: [EMAIL PROTECTED]
On Wed, Feb 28, 2001 at 10:52:34PM +0100, Juliusz Chroboczek wrote:
> Package: debian-policy
> Version: 3.1.1.1
>
> 4. updating section 4.4 in policy with a caveat about echo.
This was done in version 3.2.1.0 of policy, Bug#48247: echo -n must
not generate a new line.
Julian
--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Julian Gilbey, Dept of Maths, Queen Mary, Univ. of London
Debian GNU/Linux Developer, see http://people.debian.org/~jdg
Donate free food to the world's hungry: see http://www.thehungersite.com/
