create a child process by fork() a parent process in shell script

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http://stackoverflow.com – It seems some answers on the site but those seem not to resolve my question. Say, #/bin/sh fpfunction(){ n=1 while (($n<20)) do echo "Hello World-- $n times" sleep 2 echo "Hello World2-- $n times" n=$(( n+1 )) done } fork(){ count=0 while (($count<=10)) do fpfunction & count=$(( count+1 )) done } fork I am expecting to "fork" this parent process to the number of 10 child processes. The way I check that those child processes are actually created is to type "ps -l" command. I am a newbie to the shell world and pleas (HowTos)