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From: sdalelt@cc.curtin.edu.au
Newsgroups: comp.lang.pascal
Subject: Re: Redirecting Exec() output
Message-ID: <1991Apr29.155721.7946@cc.curtin.edu.au>
Date: 29 Apr 91 07:57:21 GMT
References: <2435@pdxgate.UUCP>
Organization: Curtin University of Technology
Lines: 26

In article <2435@pdxgate.UUCP>, mwizard@eecs.cs.pdx.edu (Craig Nelson) writes:

>       UNZIP FOO.ZIP c:\FOODIR > c:nul
>
> from the DOS prompt works like a champ.  But if you use Exec() from the
> DOS unit, and set the parameters like so:
>
>       Exec('UNZIP.EXE','FOO.ZIP c:\FOODIR > c:nul');
>
> and the output is no longer redirected to nul.  It appears on the screen,
> and I assure you it isn't a pretty site in the middle of a TVision program.

DOS performs the re-direction for you!  You'll need to spawn a command
processor in order for the redirection to work!

ie.     exec(getenv('COMSPEC'),'UNZIP.EXE FOO.ZIP C:\FOODIR > nul');

Cheers,
Lincoln.
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