1. 以root身份啟動

   sudo passwd root修改密碼

   vi /etc/lightdm/lightdm.conf

[Seat:*]
autologin-guest=false
autologin-user=root >>>>>>>>>>>>>>>>>>>>>>>>>
autologin-user-timeout=0

   ps: lightdm= light display manager 參考 https://www.cnblogs.com/EasonJim/p/7128317.html

2. vi /etc/rc.local, chmod +x /etc/rc.local

#!/bin/sh
sleep 3
route add -net 10.111.2.0/24 gw 192.168.8.24

3. vi /root/.profile

tty -s && mesg n || true

4. reboot