From: Abramo Bagnara <abramo@alsa-project.org>
To: Doug McNaught <doug@wireboard.com>
Cc: Riley Williams <rhw@MemAlpha.cx>,
Ville Herva <vherva@niksula.hut.fi>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: Need blocking /dev/null
Date: Thu, 01 Nov 2001 08:52:46 +0100 [thread overview]
Message-ID: <3BE0FF4E.4A9D06AF@alsa-project.org> (raw)
In-Reply-To: <Pine.LNX.4.21.0110312256030.28028-100000@Consulate.UFP.CX> <m31yjjz6ws.fsf@belphigor.mcnaught.org>
Doug McNaught wrote:
>
> Riley Williams <rhw@MemAlpha.cx> writes:
>
> > Are you sure?
> >
> > > find / -name "wanted-but-lost-download" | eat
> >
> > Doesn't work - you're piping the stdin there, not stderr as per my
> > example above. AFAIK, there's no way to pipe stderr without also piping
> > stdout, hence this sort of solution just doesn't work.
>
> The Bourne shell is more perverse than you realize:
>
> $ exec 3>&1; find / -name "wanted-but-lost-download" 2>&1 1>&3 3>&- | eat
>
> [stolen from "Csh Programming Considered Harmful" by Tom Christiansen]
>
> Horrible, but does work. ;)
$ find / -name "wanted-but-lost-download" 2>&1 1>&0 | eat
is simpler although dependent on stdin being a tty
--
Abramo Bagnara mailto:abramo@alsa-project.org
Opera Unica Phone: +39.546.656023
Via Emilia Interna, 140
48014 Castel Bolognese (RA) - Italy
ALSA project http://www.alsa-project.org
It sounds good!
next prev parent reply other threads:[~2001-11-01 7:53 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-29 21:07 Need blocking /dev/null Marko Rauhamaa
2001-10-29 21:24 ` Alan Cox
2001-10-30 3:52 ` Marko Rauhamaa
2001-10-30 7:02 ` Tim Connors
2001-10-30 16:04 ` Marko Rauhamaa
2001-10-31 0:51 ` Riley Williams
2001-10-31 9:23 ` Ville Herva
2001-10-31 23:13 ` Riley Williams
2001-11-01 0:11 ` Doug McNaught
2001-11-01 7:27 ` Ville Herva
2001-11-01 7:52 ` Abramo Bagnara [this message]
2001-11-01 23:51 ` Riley Williams
2001-11-02 19:53 ` Ville Herva
2001-11-02 20:04 ` John Adams
2001-11-02 20:32 ` Ville Herva
2001-11-02 20:46 ` Tim Walberg
2001-11-05 22:08 ` Andreas Schwab
2001-11-01 7:24 ` Ville Herva
2001-10-29 21:45 ` Hugh Dickins
2001-10-29 23:03 ` elko
2001-10-29 23:12 ` Mike Fedyk
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