How to get child process from parent process

Question

Is it possible to get the child process id from parent process id in shell script?

I have a file to execute using shell script, which leads to a new process

Answer 1

I'v written a scrpit to get all child process pids of a parent process. Here is the code.Hope it helps.

function getcpid() {
    cpids=`pgrep -P $1|xargs`
#    echo "cpids=$cpids"
    for cpid in $cpids;
    do
        echo "$cpid"
        getcpid $cpid
    done
}

getcpid $1