Article View: comp.os.msdos.programmer
Article #5619Re: Spawning processes in DOS
From: Brian K. W. Hook
Date: Thu, 04 Apr 1991 14:51
Date: Thu, 04 Apr 1991 14:51
30 lines
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1718 bytes
In article <1374@bragi.ctron.com> dj@balrog.ctron.com (DJ Delorie) writes:
|>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
Unfortunately, this assumes that you can trap the program's output using
standard redirection. What about programs that write direct to video
memory? Most of my programs do, and when I redirect them I get blank
files. Same with redirecting input...I don't use the standard DOS int to
get a character, I use bioskey() under Turbo C.
Any way around this?
Brian
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<1991Apr3.133226.22304@ibmpa.awdpa.ibm.com> <1374@bragi.ctron.com>Show Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!swrinde!cs.utexas.edu!asuvax!ukma!usenet.ins.cwru.edu!gatech!uflorida!reef.cis.ufl.edu!jdb From: jdb@reef.cis.ufl.edu (Brian K. W. Hook) Newsgroups: comp.os.msdos.programmer Subject: Re: Spawning processes in DOS Message-ID: <27813@uflorida.cis.ufl.EDU> Date: 4 Apr 91 14:51:43 GMT References: <1991Apr3.133226.22304@ibmpa.awdpa.ibm.com> <1374@bragi.ctron.com> Sender: news@uflorida.cis.ufl.EDU Organization: UF CIS Dept. Lines: 30