查看端口占用
lsof -i tcp:80
杀死httpd占用80端口
pkill httpd
https://sshwifty.herokuapp.com/
参考
查看端口占用
https://www.cnblogs.com/xqzt/p/4919191.html
杀死httpd
https://blog.csdn.net/qq_39208536/article/details/118296992
更改ssh默认端口
https://www.jianshu.com/p/995be5f1cdfa
