ubuntu20.04 配置UI root登录和ssh root登录

sudo passwd root

sudo vi /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf

增加 greeter-show-manual-login= true

sudo vi /etc/pam.d/gdm-autologin

注释掉auth required pam_succeed_if.so user != root quiet_success

sudo vi /etc/pam.d/gdm-password

注释掉auth required pam_succeed_if.so user != root quiet_success

sudo vi /root/.profile

修改为如下

tty -s && mesg n || true
mesg n || true

sudo apt-get install openssh-server

sudo vi /etc/ssh/sshd_config

#PermitRootLogin prohibit-password 下增加PermitRootLogin yes

sudo service ssh start