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Re: Why can't I say "&>&3"? Bug or feature?


From: Chet Ramey
Subject: Re: Why can't I say "&>&3"? Bug or feature?
Date: Thu, 06 Dec 2012 09:18:02 -0500
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:17.0) Gecko/17.0 Thunderbird/17.0

On 12/6/12 5:48 AM, Tim Friske wrote:
> Hi folks,
> 
> why is it that I can't say:
> 
> exec 3>/dev/null
> echo foobar &>&3
> # Error: "-bash: syntax error near unexpected token `&'"

Because the shorthand &> wasn't extended to arbitrary file descriptors.

> but the following works:
> 
> echo foobar &>/dev/null
> echo foobar >&3 2>&3
> 
> I think the succinct notation "&>&N" where N is some numbered file
> descriptor should work also. Is this behavior a bug or feature?

It's simply a feature that was never implemented because there was
little or no demand.

Chet

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/



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