title: joining a multicast group in linux using a command line
body: <p>I'm trying to join/define a multicast group in linux. Is there anyway to achieve this using a command line? I know it is possible to do so programmatically. But I would like to test my idea before programming. </p>
  
  <p>P.S: a route to 244.0.0.0 has already been added and eth0 supports multicast</p>