title: Message Queue - Multiple processes send cmd on a msgqueue
body: <p>I have a scenario where multiple processes (p1,p2,etc) simultaneously send a command (post) to a msg Queue(cmd_msg_q).</p>
  
  <p>And there is one receiver processes (R1) which retrieves the msg from the queue and send appropriate reply back to the processes on another msg queue ( response_msg_q ).</p>
  
  <p>how to reply from the receiver process so that the message is sent to that particular processes ?</p>
  
  <p>( Using Posix Message queue. ) Here Process A, B or C gets created dynamically. Max limit is 20 process which can send commands.</p>