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What I believe the ps function does is reads all the information from /proc. You'll notice a bunch of directories that are numbers. Those numbers are your pids. In each directory you have information about the pids.
No problem, well that is what I'm trying to do now but it get so troublesome plus we've to look into each of it to find what argument are passed to the process. I wish there's a smart and fast way of doing it.
program that will create a none zombie child process to display Number of all active processes.can some one help me with this?
When you fork() a child, wait for a termination signal from that child and then the child will not become a zombie. Review the earlier answers regarding how to get your list of all active processes. Note that you've resurrected an 11 year old thread to ask this question, not shown any effort on your part, and should try some programming or scripting efforts first before asking your question.