方法一：lsof

[root@18MBTestOptool ~]# lsof -i :3000
COMMAND   PID   USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
gogs    26927 webgit    9u  IPv6 2785283      0t0  TCP *:hbci (LISTEN)

方法二：netstat

[root@18MBTestOptool ~]# netstat -lnp | grep 3000
tcp        0      0 :::3000      :::*     LISTEN      26927/./gogs