Ubuntu20.04开启root账户的方法
1 创建root账户密码
以普通用户登录系统,创建root用户的密码,在终端输入命令:sudo passwd root
根据提示输入设置的密码,完成root用户密码设置。
![ubuntu默认账户密码_ubuntu初次启动密码插图2 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/uploads/2024/04/83fCB4mrEc.png)
![ubuntu默认账户密码_ubuntu初次启动密码插图3 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
2 修改/usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf文件配置
sudo vim /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf
在文件末尾添加如下两行:
greeter-show-manual-login=true
all-guest=false
![ubuntu默认账户密码_ubuntu初次启动密码插图4 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/uploads/2024/04/63M9cbt2.jpg)
![ubuntu默认账户密码_ubuntu初次启动密码插图5 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
![ubuntu默认账户密码_ubuntu初次启动密码插图6 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/uploads/2024/04/63M9cbt2.jpg)
![ubuntu默认账户密码_ubuntu初次启动密码插图7 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
3 修改/etc/pam.d/gdm-autologin文件配置
sudo vim /etc/pam.d/gdm-autologin
注释掉第三行:auth required pam_succeed_if.so user != root quiet_success
![ubuntu默认账户密码_ubuntu初次启动密码插图8 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/uploads/2024/04/6KOgXd3D.png)
![ubuntu默认账户密码_ubuntu初次启动密码插图9 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
![ubuntu默认账户密码_ubuntu初次启动密码插图10 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/uploads/2024/04/6KOgXd3D.png)
![ubuntu默认账户密码_ubuntu初次启动密码插图11 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
4 修改/etc/pam.d/gdm-password文件配置
sudo vim /etc/pam.d/gdm-password
注释掉第三行:auth required pam_succeed_if.so user != root quiet_success
![ubuntu默认账户密码_ubuntu初次启动密码插图12 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/uploads/2024/04/1cYR9m.png)
![ubuntu默认账户密码_ubuntu初次启动密码插图13 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
![ubuntu默认账户密码_ubuntu初次启动密码插图14 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/uploads/2024/04/1cYR9m.png)
![ubuntu默认账户密码_ubuntu初次启动密码插图15 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
5 修改 /root/.profile文件配置
sudo vim /root/.profile
将文件末尾的 mesg n 2> /dev/null || true 这一行修改成
tty -s&&mesg n || true
![ubuntu默认账户密码_ubuntu初次启动密码插图16 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/uploads/2024/04/AjtHnhc5J.jpg)
![ubuntu默认账户密码_ubuntu初次启动密码插图17 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
![ubuntu默认账户密码_ubuntu初次启动密码插图18 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/uploads/2024/04/AjtHnhc5J.jpg)
![ubuntu默认账户密码_ubuntu初次启动密码插图19 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
7 注销重新登录系统
在登录界面选择Not listed? ,输入root账户和密码,即可登录成功。
![ubuntu默认账户密码_ubuntu初次启动密码插图20 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/uploads/2024/04/mW63rs30.jpg)
![ubuntu默认账户密码_ubuntu初次启动密码插图21 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
![ubuntu默认账户密码_ubuntu初次启动密码插图22 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/uploads/2024/04/mW63rs30.jpg)
![ubuntu默认账户密码_ubuntu初次启动密码插图23 ubuntu默认账户密码_ubuntu初次启动密码](https://sigusoft.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
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