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根据端口杀死进程

查看端口占用情况​

netstat -tln | less

激活Internet连接 (仅服务器)
Proto Recv-Q Send-Q Local Address           Foreign Address         State      
tcp        0      0 127.0.0.1:7890          0.0.0.0:*               LISTEN     
tcp        0      0 127.0.0.53:53           0.0.0.0:*               LISTEN     
tcp        0      0 127.0.0.1:631           0.0.0.0:*               LISTEN     
tcp        0      0 127.0.0.1:3000          0.0.0.0:*               LISTEN     
tcp        0      0 127.0.0.1:9090          0.0.0.0:*               LISTEN     
tcp        0      0 0.0.0.0:902             0.0.0.0:*               LISTEN     
tcp        0      0 0.0.0.0:27017           0.0.0.0:*               LISTEN     
tcp        0      0 0.0.0.0:3306            0.0.0.0:*               LISTEN

查看端口对应进程​

lsof -i:3000

COMMAND   PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
chrome   8227  wey   35u  IPv4 234132      0t0  TCP localhost:41086->localhost:3000 (CLOSE_WAIT)
chrome   8227  wey   37u  IPv4  85811      0t0  TCP localhost:36870->localhost:3000 (ESTABLISHED)
chrome   8227  wey   46u  IPv4 233375      0t0  TCP localhost:41090->localhost:3000 (CLOSE_WAIT)
node    10716  wey   24u  IPv4  90144      0t0  TCP localhost:3000 (LISTEN)
node    10716  wey   27u  IPv4  90200      0t0  TCP localhost:3000->localhost:36870 (ESTABLISHED)

杀死进程​

kill -9 {pid}