Linux查看占用端口的进程或程序方法汇总

1 netstat

命令：netstat -ap | grep 5901

ubuntu@mcj:~$ netstat -ap | grep 5901
(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 [::]:5901               [::]:*                  LISTEN      1971/Xvnc4
tcp6       0      0 172.25.17.208:5901      172.25.17.26:63111      ESTABLISHED 1971/Xvnc4

命令：netstat -tln | grep 5901

ubuntu@mcj:~$ netstat -tln | grep 5901
tcp6       0      0 :::5901                 :::*                    LISTEN

命令：netstat -tunlp | grep 5901

ubuntu@mcj:~$ netstat -tunlp | grep 5901
(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 :::5901                 :::*                    LISTEN      1971/Xvnc4

参数含义：

• -t : 指明显示TCP端口
• -u : 指明显示UDP端口
• -l : 仅显示监听套接字(LISTEN状态的套接字)
• -p : 显示进程标识符和程序名称，每一个套接字/端口都属于一个程序
• -n : 不进行DNS解析
• -a 显示所有连接的端口

2 lsof

命令：sudo lsof -i:5901

ubuntu@mcj:~$ sudo lsof -i:5901
COMMAND  PID   USER   FD   TYPE     DEVICE SIZE/OFF NODE NAME
Xvnc4   1971 ubuntu    3u  IPv6  865124068      0t0  TCP *:5901 (LISTEN)
Xvnc4   1971 ubuntu   24u  IPv6 3053016662      0t0  TCP mcj:5901->172.25.17.26:63111 (ESTABLISHED)