fadedbee@ubuntu18:~$ sudo netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:2049 0.0.0.0:* LISTEN -
tcp 0 0 0.0.0.0:34117 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 2226/mysqld
tcp 0 0 127.0.0.1:80 0.0.0.0:* LISTEN 2013/nginx: master
tcp 0 0 192.168.122.1:53 0.0.0.0:* LISTEN 3302/dnsmasq
tcp 0 0 10.0.3.1:53 0.0.0.0:* LISTEN 2568/dnsmasq
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 1300/systemd-resolv
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1408/cupsd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 2917/master
tcp 0 0 127.0.0.1:5434 0.0.0.0:* LISTEN 2145/postgres
tcp6 0 0 :::2049 :::* LISTEN -
tcp6 0 0 :::36105 :::* LISTEN -
tcp6 0 0 ::1:631 :::* LISTEN 1408/cupsd
tcp6 0 0 ::1:25 :::* LISTEN 2917/master
什么在监听端口 2049、34117 和 36105？
没有 pid 的情况下我该如何杀死它？