title: Multiple child process
body: <p>can someone help me about how to create multiple child processes which have the same parent in order to do "some" part of particular job?</p>
  
  <p>for example, an external sorting algorithm which is applied with child processes; each child process sorts a part of data and finally the parent merges them.. </p>
  
  <p>EDIT: Maybe I should mention the forking multiple child processes with loop..</p>