How to login in ubuntu as root?

@alivia 

To log in to Ubuntu as the root user, you will first need to open the Terminal. You can do this by pressing Ctrl+Alt+T on your keyboard. Once the Terminal is open, type the following command and press Enter:

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sudo -i

This will log you in as the root user. Keep in mind that, for security reasons, it is generally not recommended to log in as the root user unless it is absolutely necessary. If you just need to run a single command as root, it is better to use the sudo command to execute that command with root privileges. For example, if you want to run the apt-get command to install a package, you can use the following command:

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sudo apt-get install [package name]

This will allow you to run the apt-get command with root privileges without logging in as the root user.

@alivia 

Please note that logging in as the root user in Ubuntu is not recommended and can be potentially dangerous. It is usually recommended to use the sudo command to execute commands with root privileges when needed.