根据端口找到进程pid

[root@localhost luban]# netstat -anp|grep "8999"
tcp6       0      0 :::8999                 :::*                    LISTEN      93234/./luban #这里的93234就是占用8999端口进程的pid    
[root@localhost luban]# ps -ef |grep luban
root      93234  91770  0 16:15 pts/1    00:00:00 ./luban
root      93491  91770  0 16:19 pts/1    00:00:00 grep --color=auto luban