Re: Spawning processes in DOS

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#5605

From: DJ Delorie
Date: Wed, 03 Apr 1991 22:22

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In article <1991Apr3.133226.22304@ibmpa.awdpa.ibm.com> dougs@claude1.rchland.ibm.com (J Doug Smith) writes:
> I'm trying to write an application that will run another program and
> get that program's output so it can be displayed to the user (much
> like an editor runs a compiler and sends the compiler's output to the
> user).  Does anyone have any Ideas on how to accomplish this?  Execing
> another programs certainly is no problem, I just don't see how to get
> the output from that program.

The only safe way (ie: compatible) is:

  . . .
  rc = system("cc -c foo.c > /tmp/blat 2>&1");
  rf = fopen("/tmp/blat", "r");
  . . .

but watch out for the 2>&1 on DOS :-)

DJ
dj@ctron.com

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!samsung!balrog!dj
From: dj@balrog.ctron.com (DJ Delorie)
Newsgroups: comp.os.msdos.programmer
Subject: Re: Spawning processes in DOS
Message-ID: <1374@bragi.ctron.com>
Date: 3 Apr 91 22:22:33 GMT
References: <1991Apr3.133226.22304@ibmpa.awdpa.ibm.com>
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Lines: 19

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