# netstat > Displays various networks related information such as open connections, open socket ports etc. - List all ports: `netstat -a` - List all listening ports: `netstat -l` - List listening TCP ports: `netstat -t` - Display PID and program names: `netstat -p` - List information continuously: `netstat -c` - List routes (-r) without resolve ip to hostname (-n): `netstat -nr`