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Netstat still requires a grep to narrow things down if you got pages of output. While not that intuitive for most the 'lsof' or 'fuser' may provide easier selectors. For example finding all local VNC ports: 'fuser -n tcp vnc' or all TCP/22 ports: 'lsof -Pnai tcp:22'. Note both take numerical ports as well as /etc/services type names (as in 'getent services portnumber').