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From: "Bart Schaefer" <schaefer@candle.brasslantern.com>
To: luomat@peak.org, zsh-users@math.gatech.edu
Subject: Re: NULLCMD
Date: Fri, 11 Jul 1997 00:27:57 -0700	[thread overview]
Message-ID: <970711002757.ZM20458@candle.brasslantern.com> (raw)
In-Reply-To: <199707110445.AAA01469@kira.peak.org>

On Jul 11, 12:45am, Timothy Luoma wrote:
} Subject: NULLCMD
}
} I don't seem to understand the NULLCMD function.

It's what gets executed when you redirect output from nowhere, e.g.

zsh% > /some/file

is equivalent to

zsh% $NULLCMD > /some/file

Conversely, READNULLCMD is what gets executed when you redirect input to
nowhere; e.g.

zsh% < /some/file

is equivalent to

zsh% $READNULLCMD < /some/file

Here's a way to fill your disk with foo:

zsh% echo foo > foo
zsh% >>foo <foo

} is there a way to use the NULLCMD feature so that if I drop a pathname it  
} will know that I want to move that file to /Some/Dir/Somewhere?

No.

You'd have to start a loop like this:

zsh% while read name; do mv $name /Some/Dir/Somewhere; done

Then you drag, drop, and hit return, until you've moved all the files;
and when done, you type ctrl-D to terminate the loop.

-- 
Bart Schaefer                                 Brass Lantern Enterprises
http://www.well.com/user/barts              http://www.brasslantern.com


  reply	other threads:[~1997-07-11  8:00 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1997-07-11  4:45 NULLCMD Timothy Luoma
1997-07-11  7:27 ` Bart Schaefer [this message]
1997-07-11  8:00   ` NULLCMD Hrvoje Niksic
1997-07-11  9:21     ` NULLCMD Geoff Wing

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