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实例：Ubuntu 配置单root用户登录

 5 years ago
source link: https://www.linuxprobe.com/ubuntu-root-login.html
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环境搭建好后，用创建的用户进入系统

shell命令
sudo vim usr/share/lightdm.conf.d/50-ubuntu.conf //编辑器不限
[SeatDefaults]
user-session=ubuntu
greeter-show-manual-login=true     #手工输入登录系统的账号密码
allow-guest=false                  #禁止guest登录
修改root密码
sudo passwd root
修改/root/.profile
sudo vim /root/.profile //root首次登录会报错解决方法
# ~/.profile: executed by Bourne-compatible login shells.

if [ "$BASH" ]; then

if [ -f ~/.bashrc ]; then

. ~/.bashrc

fi

fi

#mesg n 注释掉mesg n 增加一行tty -s && mesg n

tty -s && mesg n
修改ssh配置文件允许root登录
sudo vim /etc/ssh/sshd_config
#permitRootLogin without-password 注释掉这行，新增下面一行
permitRootLogin yes

重启ssh服务即可


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