Had not set the root password After installing Ubuntu, how do you want to enter the root account?

Had not set the root password After installing Ubuntu, how do you want to enter the root account?

Ubuntu's default root password is random, that is, each boot has a new root password. We can command in the terminal input sudo passwd, then enter the current user's password, the terminal will prompt us to enter a new password and confirm, then the password is the root of the new password. After the amendment is successful, enter the command su root, then enter the new password ok.