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X-Authentication-Warning: slinky.cs.nyu.edu: pechtcha owned process doing -bs
Date: Sat, 14 Jun 2003 19:18:05 -0400 (EDT)
From: Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To: cygwin AT cygwin DOT com
To: Randall R Schulz <rschulz AT sonic DOT net>
cc: cygwin AT cygwin DOT com
Subject: Re: bash : stderr & more (pipe for stderr)
In-Reply-To: <5.2.1.1.2.20030614150455.01e8fa48@pop.sonic.net>
Message-ID: <Pine.GSO.4.44.0306141916270.25752-100000@slinky.cs.nyu.edu>
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On Sat, 14 Jun 2003, Randall R Schulz wrote:

> Alex,
>
> At 00:25 2003-06-14, Alex Vinokur wrote:
>
> >$ <command> | more     # works only for stdout
> >
> >$ <command> |& more
> >bash: syntax error near unexpected token `&'
> >
> >How to use pipe for stderr?
>
> BASH uses the Bourne and Korn shell syntax for redirection. You're
> using the CSH / tcsh variety.
>
>
> # Redirect standard out and standard error separately
> % cmd >stdout-redirect 2>stderr-redirect
>
> # Redirect standard error and out together
> % cmd >stdout-redirect 2>&1
>
> # Merge standard error with standard out and pipe
> % cmd 2>&1 |cmd2
>
> Randall Schulz

Randall,

I'm probably being a smartass here, but you can also *swap* stdout and
stderr on redirection:

% cmd 3>&2 2>&1 1>&3-

Hope this helps,
	Igor
-- 
				http://cs.nyu.edu/~pechtcha/
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     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
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