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From: jonas@Neon.Stanford.EDU (jonas karlsson)
Newsgroups: comp.unix.wizards
Subject: Talking to programs
Message-ID: <1990Aug3.213540.14476@Neon.Stanford.EDU>
Date: 3 Aug 90 21:35:40 GMT
Organization: Computer Science Department, Stanford University
Lines: 10

How do  i call a program from a function, have the function respond to 
the various prompts, give the correct replies, and catch the output?
Someone suggested using socketpairs, fork off a child that dup2's standard in 
and out into one half of the socketpairs, and then execv'ing the program
(basically).  I tried following his suggestions, with no success. 
could someone please give me a detailed description (or code) on
how to do this?

tnx
-j