$ ss -nlp | grep 80
u_str             LISTEN              0                    80                                                                       /var/run/mysqld/mysqld.sock 21002                         * 0
udp               UNCONN              0                    0                                                                    [fe80::cf7:d4ff:feaf:bf30]%eth0:53                         [::]:*
tcp               LISTEN              0                    80                                                                                         127.0.0.1:3306                    0.0.0.0:*
tcp               LISTEN              0                    128                                                                                                *:80                            *:*
tcp               LISTEN              0                    32                                                                   [fe80::cf7:d4ff:feaf:bf30]%eth0:53                         [::]:*