Linux查看端口占用和强制释放占用的端口

1.查找被占用的端口：

chandler@chandler:/data/tools/workspace$ netstat -lnp|grep 9001
(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)
tcp6       0      0 :::9001                 :::*                    LISTEN      870/java

2.查看被占用端口的PID：

chandler@chandler:/data/tools/workspace$ sudo lsof -i:9001
[sudo] password for yihong.ou: 
COMMAND PID      USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
java    870 yihong.ou  141u  IPv6 997805      0t0  TCP *:9001 (LISTEN)

3.kill掉该进程

chandler@chandler:/data/tools/workspace$ sudo kill -9 870