设置NFS服务 共享给其它
sudo cat /etc/exports
sudo exportfs -ra
设置samba服务 指定用户 sudo smbpasswd -a ray
sudo vim /etc/samba/smb.conf
sudo systemctl restart smbd
更新ubuntu后不能联网 设置dns
/etc/NetworkManager/system-connections/
/etc/resolv.conf.bak
nameserver 202.96.128.86
nameserver 114.114.114.114
nameserver 8.8.8.8
sudo systemctl restart systemd-resolved.service
