Path: utzoo!attcan!uunet!swlabs!csd-v!bak
From: bak@csd-v.UUCP (Bruce A. Kern)
Newsgroups: comp.unix.questions
Subject: Re: Communicating with a background process
Keywords: unix,pipe,background
Message-ID: <179@csd-v.UUCP>
Date: 19 Nov 88 23:33:23 GMT
References: <4454@phoenix.Princeton.EDU>
Reply-To: bak@csd-v.UUCP (000-Bruce A. Kern)
Organization: Computer Systems Design, Sandy Hook, Ct.
Lines: 13

The system calls which will accomplish what you want are pipe(2) and
dup(2).  Two calls to pipe are required, one to open a read channel
and one for a write channel.  The dup calls allow the file descriptors
to be remapped onto 0 and 1 ( standard i/o ).  See Rochkind's excellent
book "Advanced Unix Programming" for details on this procedure.  If 
you need further examples contact me via E-mail.


-- 
Bruce A. Kern                                  1-203-270-0399 
Computer Systems Design                        Voice: 730 - 1700 Mon. thru Fri.
29 High Rock Road                              Data:  All other times  
Sandy Hook, Ct.  06482