netstat

Display network-related information such as open connections, open socket ports, etc. See also: ss. More information: https://manned.org/netstat.

• List all ports:

netstat {{[-a|--all]}}

• List all listening ports:

netstat {{[-l|--listening]}}

• List listening TCP ports:

netstat {{[-t|--tcp]}}

• Display PID and program names:

netstat {{[-p|--program]}}

• List information continuously:

netstat {{[-c|--continuous]}}

• List routes and do not resolve IP addresses to hostnames:

netstat {{[-rn|--route --numeric]}}

• List listening TCP and UDP ports (+ user and process if you’re root):

netstat {{[-tulpne|--tcp --udp --listening --program --numeric --extend]}}