How to switch to root user in linux system

The method to switch to the root user under the Linux system is: 1. Execute the [sudo passwd root] command; 2. Set the password of the root user; 3. Execute the [su root] command so that you can switch freely The root user is here.

Specific command:

(Recommended tutorial: linux tutorial)

(1) Use sudo command

xzm@ubuntu:~$  sudo

Then enter the current administrator user password to obtain super user privileges. But by default, root permissions expire after 5 minutes.

(2) You can use the sudo -i command

xzm@ubuntu:~$  sudo -i

Then, enter the password of the current administrator user to enter the root user.

(3) If you want to always use root privileges, you must switch to the root user through the su command

First, set the password of the root user:

xzm@ubuntu:~$  sudo passwd root

This way you can set The root user's password.

After that, you can freely switch to the root user

xzm@ubuntu:~$  su

Enter the password of the root user.

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