CODE EXAMPLE FOR SHELL

list of created ssh port forwarding

 % sudo lsof -i -n | egrep '<sshd>'
sshd  15767  root  3u  IPv4 147401205   TCP x.x.x.x:22->y.y.y.y:27479 (ESTABLISHED)
sshd  15842  user  3u  IPv4 147401205   TCP x.x.x.x:22->y.y.y.y:27479 (ESTABLISHED)
sshd  15842  user  9u  IPv4 148002889   TCP 127.0.0.1:33999->127.0.0.1:www (ESTABLISHED)
sshd  1396   user  9u  IPv4 148056581   TCP 127.0.0.1:5000 (LISTEN)
sshd  25936  root  3u  IPv4 143971728   TCP *:22 (LISTEN)