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X-Authentication-Warning: slinky.cs.nyu.edu: pechtcha owned process doing -bs
Date: Wed, 7 Aug 2002 13:49:29 -0400 (EDT)
From: Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To: cygwin AT cygwin DOT com
To: cygwin AT cygwin DOT com
Subject: Re: System Calls
In-Reply-To: <E3725E2B7548D51192090002A534A18A3368EC@s2-vic-r1.nrn.nrcan.gc.ca>
Message-ID: <Pine.GSO.4.44.0208071341580.9607-100000@slinky.cs.nyu.edu>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII

On Wed, 7 Aug 2002, Murdoch, Matthew wrote:

> I am trying to make a system call using the system function in C.  I have an
> executable program that requires at input text file and I want to put the
> output in a text file.   I cannot seem to get the system function to work.
> I have tried the following:
>
> system ("/cygdrive/c/users/mmurdoch/ACE/sixs \
>            < /cygdrive/c/users/mmurdoch/ACE/sixSIn.txt \
>            > /cygdrive/c/users/mmurdoch/ACE/sixSOut.txt")

This should have worked, unless you don't have /bin/sh installed.
Try "system(NULL)" and check the return code.  See "man system"
for details.

> and I have also tried
> system("cmd /c c:\users\mmurdoch\ACE\sixs < c:\users\mmurdoch\ACE\sixSIn.txt
> > c:\users\mmurdoch\ACE\sixSOut.txt);
> - I have also tried it without the "cmd /c"

You should really escape your backslashes (i.e. "cmd /c
c:\\users\\mmurdoch... etc").  Other than that, this will have the same
issues as the first one.
	Igor
-- 
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     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

It took the computational power of three Commodore 64s to fly to the moon.
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