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Date:	Wed, 12 Apr 2006 12:28:03 -0400 (EDT)
From:	Igor Peshansky <pechtcha AT cs DOT nyu DOT edu>
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To:	cygwin AT cygwin DOT com
Subject:	Re: XP embedded
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On Wed, 12 Apr 2006, Corinna Vinschen wrote:

> On Apr 12 12:05, Igor Peshansky wrote:
> > On Wed, 12 Apr 2006, Christopher Faylor wrote:
> >
> > > On Wed, Apr 12, 2006 at 07:43:33AM -0400, Jeff Lange wrote:
> > > >/dev/zero does work properly.  I changed line 68 in /etc/profile to
> > > >use /dev/zero instead of /dev/null and I no longer get the bash error
> > > >on start up.
> >
> > FWIW, /dev/zero is not always the proper substitution for /dev/null (i.e.,
> > on input redirection, it will work differently).
>
> Mon dieu!

Yes, surprising, isn't it? :-)

> > What I'm wondering is whether we need the Windows NUL device at all for
> > implementing /dev/null...  It's rather trivial[*] to implement one without
> > resorting to a Windows device.  Would there be any way of distinguishing
> > an emulation from the real NUL device?
> > 	Igor
>
> Since /dev/null is a really existing native device, it also works for
> stdio redirection when executing a native Windows process.  Off the top
> of my head I don't know a case for which that really matters, but it's
> guaranteed that somebody on the list will find a case really soon after
> this change.

Hmm, true, but wouldn't we have this problem already if someone redirected
some native program's output to /dev/zero?  Or are you talking about
inheriting an open handle to /dev/null?
	Igor
-- 
				http://cs.nyu.edu/~pechtcha/
      |\      _,,,---,,_	    pechtcha AT cs DOT nyu DOT edu | igor AT watson DOT ibm DOT com
ZZZzz /,`.-'`'    -.  ;-;;,_		Igor Peshansky, Ph.D. (name changed!)
     |,4-  ) )-,_. ,\ (  `'-'		old name: Igor Pechtchanski
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

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