lsof output numeric ports
According to man lsof, -P inhibits the conversion of port numbers to port names for network files. [ec2-user@ip-172-16-7-193 ~]$ sudo lsof -i | grep java java 4031 ec2-user 43u IPv6 25444 0t0 TCP *:webcache (LISTEN) java 4031 ec2-user 351u IPv6 30785 0t0 TCP localhost:mxi (LISTEN) [ec2-user@ip-172-16-7-193 ~]$ sudo lsof -i -P| grep java java 4031 ec2-user 43u IPv6 25444 0t0 TCP *:8080 (LISTEN) java 4031 ec2-user 351u IPv6 30785 0t0 TCP localhost:8005 (LISTEN)