[root@cob]:~# netstat -naptu | grep LISTEN  | grep 54
tcp        0      0 0.0.0.0:54867           0.0.0.0:*               LISTEN      -
[root@cob]:~# lsof -i :54867
[root@cob]:~# lsof -i tcp:54867
[root@cob]:~# lsof -i tcp:54867 -P -R
[root@cob]:~#