I'm working on a simple shell for an os class that needs to be capable of running processes in the foreground and background. I have this working fine, but I need to be able to check if a process is done (using its pid) so I can keep a list of running background processes. Is there any simple way to do this?
Illusion and reality become impartiality and confidence.
Use waitpid() with the NOHANG option if you want to go round a list of children looking to see which ones have exited.
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
