c - exit status of a program running in background

Question

I have an assignment in which I have to create a mini shell which is capable of doing a lot of things including job control. I managed to create new jobs using fork and execvp.

Answer 1

If you don't do anything special the parent receives a SIGCHLD when the child dies. Careful though, multiple children can terminate at the same time and you'll get a single signal. The correct way to handle this is to loop (in the signal handler):

while (waitpid(-1, NULL, WNOHANG) > 0)
    /* Stuff. */