Date: Sat, 18 May 2002 16:20:37 +0100 From: Brian Somers <brian@Awfulhak.org> To: "Tim J. Robbins" <tjr@FreeBSD.org> Cc: Brian Somers <brian@Awfulhak.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org, brian@Awfulhak.org Subject: Re: cvs commit: src/bin/pwd pwd.1 pwd.c Message-ID: <200205181520.g4IFKbWs010806@hak.lan.Awfulhak.org> In-Reply-To: Message from "Tim J. Robbins" <tjr@FreeBSD.org> of "Sat, 18 May 2002 23:43:46 %2B1000." <20020518234346.A16088@treetop.robbins.dropbear.id.au>
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> On Sat, May 18, 2002 at 11:30:09AM +0100, Brian Somers wrote:
>
> > > tjr 2002/05/17 19:47:25 PDT
> > >
> > > Modified files:
> > > bin/pwd pwd.1 pwd.c
> > > Log:
> > > Make -L the default, allow both -L and -P to be specified (last one used
> > > matters), fall back to -P mode if we can't get the logical directory.
> > >
> > > Revision Changes Path
> > > 1.19 +2 -2 src/bin/pwd/pwd.1
> > > 1.18 +14 -9 src/bin/pwd/pwd.c
> >
> > I don't think this is wise. I've always been of the understanding
> > that ``pwd'' gives me my logical directory and ``/bin/pwd'' gives me
> > the physical one. I've written scripts to depend on this.
>
> Ok, I will restore -P as the default for the moment. I understand that
> /bin/pwd has historically used getcwd() or similar, but I wasn't aware
> that anything would break if pwd gave the logical directory name by default.
>
> What assumptions do the scripts make that would no longer work if -L
> was the default?
Well, the scripts just assume that /bin/pwd does a getcwd() --
looking at $PWD (which seems to be how -L is implemented) is
something that the script can do to figure out the logical directory.
I can't remember exactly why the scripts needed the real directory -
just that they wanted to know if [ "$PWD" != $(/bin/pwd) ].
Doesn't POSIX or one of the other standards mandate which one is
presented by default ? I'm happy to be overruled for a good reason.
> Tim
--
Brian <brian@Awfulhak.org> <brian@freebsd-services.com>
<http://www.Awfulhak.org>; <brian@[uk.]FreeBSD.org>
Don't _EVER_ lose your sense of humour ! <brian@[uk.]OpenBSD.org>
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