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Article #1106

Re: Can't pipe to NUL in a dos session - Help please!

#1106
From: Fuzzy Fox
Date: Wed, 18 Nov 1992 17:56
21 lines
1311 bytes
ANAVARRO@vm.poly.edu (Anthony F. Navarro) writes:

>When in a DOS session, be it at the command line or in a batch file,
>if something is piped to NUL ( i.e. dir >NUL ) i get a "sharing violation
>reading drive c - Abort, retry, fail" error.  I get this at the command
>line and in my batch files.

It's possible that in your AUTOEXEC you loaded a TSR and piped its
output to NUL in order to avoid seeing the startup text on the screen.
Since the TSR never exits, it may not have closed the standard output
device (NUL, in this case), and thus further attempts to modify that
device result in a sharing violoation.

I don't know if this can actually happen, but it doesn't hurt to go
look.

-- 
#ifdef TRUE        | Fuzzy Fox (a.k.a. David DeSimone)       fuzzy@netcom.com
#define  TRUE   0  |
#define  FALSE  1  |  "You have been recruited by the Star League to defend
#endif             |     the Frontier against Xur and the Kodan Armada."
Technical Details
Message-ID: <1992Nov18.175648.17461@rei.com>
Path: arc1-ca.pugleaf.net!sparky!uunet!rei2!fox
References: <168A28014.ANAVARRO@vm.poly.edu>

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Newsgroups: comp.os.ms-windows.setup
Path: arc1-ca.pugleaf.net!sparky!uunet!rei2!fox
From: fox@rei.com (Fuzzy Fox)
Subject: Re: Can't pipe to NUL in a dos session - Help please!
Message-ID: <1992Nov18.175648.17461@rei.com>
Date: Wed, 18 Nov 1992 17:56:48 GMT
References: <168A28014.ANAVARRO@vm.poly.edu>
Organization: Recognition Equipment, Inc.
Lines: 21