How do you use sudo in Ubuntu?

You could use sudo for commands that require root privileges in Ubuntu terminal. However you can enable the root account and set a password for it. To do so use: Firstly you will be asked for your current user password and after this you will be asked for the new password twice (new and retype password) as your new root password.
For More Information Please Refer:
https://askubuntu.com/questions/189907/what-is-the-default-root-password
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