linux查看端口进程几种方法
有时候启动应用时会提示端口被占，这时候需要找出占用端口的进程把它kill掉才能正常启动应用。
1 netstat
sudo netstat -pnltu Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1/systemd tcp 0 0 0.0.0.0:8022 0.0.0.0:* LISTEN 2695/sshd tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 3570/master tcp 0 0 0.0.0.0:9090 0.0.0.0:* LISTEN 1/systemd tcp 0 0 127.0.0.1:2628 0.0.0.0:* LISTEN 2707/dictd 1.12.1: tcp6 0 0 :::2377 :::* LISTEN 14901/dockerd tcp6 0 0 :::7946 :::* LISTEN 14901/dockerd tcp6 0 0 :::3306 :::* LISTEN 15127/docker-proxy tcp6 0 0 :::111 :::* LISTEN 10557/rpcbind tcp6 0 0 :::8022 :::* LISTEN 2695/sshd udp 0 0 0.0.0.0:980 0.0.0.0:* 10557/rpcbind udp 0 0 0.0.0.0:68 0.0.0.0:* 2627/dhclient udp 0 0 0.0.0.0:111 0.0.0.0:* 1/systemd udp 0 0 0.0.0.0:4789 0.0.0.0:* - udp6 0 0 :::980 :::* 10557/rpcbind udp6 0 0 :::111 :::* 10557/rpcbind udp6 0 0 :::7946 :::* 14901/dockerd
其中:
- p 显示监听服务的进程号或程序名
- n 用数字的形式表示主机,端口和用户名
- l 只显示监听的socket
- t 显示TCP连接
- u 显示UDP连接
2 ss
sudo ss -l -p -t -u -n Netid State Recv-Q Send-Q Local Address:Port Peer Address:Port udp UNCONN 0 0 *:980 *:* users:(("rpcbind",pid=10557,fd=8)) udp UNCONN 0 0 *:68 *:* users:(("dhclient",pid=2627,fd=6)) udp UNCONN 0 0 *:111 *:* users:(("rpcbind",pid=10557,fd=5),("systemd",pid=1,fd=57)) udp UNCONN 0 0 *:4789 *:* udp UNCONN 0 0 :::980 :::* users:(("rpcbind",pid=10557,fd=10)) udp UNCONN 0 0 :::111 :::* users:(("rpcbind",pid=10557,fd=9)) udp UNCONN 0 0 :::7946 :::* users:(("dockerd",pid=14901,fd=48)) tcp LISTEN 0 128 *:111 *:* users:(("rpcbind",pid=10557,fd=4),("systemd",pid=1,fd=56)) tcp LISTEN 0 128 *:8022 *:* users:(("sshd",pid=2695,fd=3)) tcp LISTEN 0 100 127.0.0.1:25 *:* users:(("master",pid=3570,fd=13)) tcp LISTEN 0 128 *:9090 *:* users:(("systemd",pid=1,fd=26)) tcp LISTEN 0 10 127.0.0.1:2628 *:* users:(("dictd",pid=2707,fd=3)) tcp LISTEN 0 128 :::2377 :::* users:(("dockerd",pid=14901,fd=37)) tcp LISTEN 0 128 :::7946 :::* users:(("dockerd",pid=14901,fd=47)) tcp LISTEN 0 128 :::3306 :::* users:(("docker-proxy",pid=15127,fd=4)) tcp LISTEN 0 128 :::111 :::* users:(("rpcbind",pid=10557,fd=11)) tcp LISTEN 0 128 :::8022 :::* users:(("sshd",pid=2695,fd=4))
3 lsof
sudo lsof -i |grep LISTEN systemd 1 root 26u IPv4 21777 0t0 TCP *:websm (LISTEN) systemd 1 root 56u IPv4 21883 0t0 TCP *:sunrpc (LISTEN) sshd 2695 root 3u IPv4 27062 0t0 TCP *:oa-system (LISTEN) sshd 2695 root 4u IPv6 27064 0t0 TCP *:oa-system (LISTEN) dictd 2707 nobody 3u IPv4 27084 0t0 TCP localhost:dict (LISTEN) master 3570 root 13u IPv4 28301 0t0 TCP localhost:smtp (LISTEN) rpcbind 10557 rpc 4u IPv4 21883 0t0 TCP *:sunrpc (LISTEN) rpcbind 10557 rpc 11u IPv6 100717 0t0 TCP *:sunrpc (LISTEN) dockerd 14901 root 37u IPv6 56238 0t0 TCP *:2377 (LISTEN) dockerd 14901 root 47u IPv6 57440 0t0 TCP *:7946 (LISTEN) docker-pr 15127 root 4u IPv6 54641 0t0 TCP *:mysql (LISTEN)