macOS查看端口被那个PID占用

USERtekiiMac-3:local user$ lsof -i:8080
COMMAND  PID USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
java    1037 user  150u  IPv6 0x743bd734e7b5d4bf      0t0  TCP *:http-alt (LISTEN)
java    1136 user   78u  IPv6 0x743bd734de76ccff      0t0  TCP localhost:49873->localhost:http-alt (CLOSE_WAIT)

就是lsof -i:8080

接下来就这样杀掉它们：

USERtekiiMac-3:local user$ kill -9 1037
USERtekiiMac-3:local user$ kill -9 1037
-bash: kill: (1037) - No such process
USERtekiiMac-3:local user$ kill -9 1136
USERtekiiMac-3:local user$ kill -9 1136
-bash: kill: (1136) - No such process

kill -9 PID