Having trouble with fork(), pipe(), dup2() and exec() in C

Question

Here\'s my code:

#include 
#include 
#include 
#include 
#include 

#         


        

Answer 1

Jonathan has the right idea. You rely on the first process to fork all the others. Each one has to run to completion before the next one is forked.

Instead, fork the processes in a loop like you are doing, but wait for them outside the inner loop, (at the bottom of the big loop for the shell prompt).

loop //for prompt
    next prompt
    loop //to fork tasks, store the pids
        if pid == 0 run command
        else store the pid
    end loop
    loop // on pids
        wait
    end loop
end loop