1、
https://www.cnblogs.com/qianyuliang/archive/2019/09/26/11591970.html
2、
https://blog.csdn.net/Doudou_Mylove/article/details/103011997
启动和关闭网卡nmcli c up ens33 nmcli c down ens33重启nmcli c reload查看连接nmcli connection