Root is the superuser on a Unix/Linux system. All you have to do is login as root using su or run command using sudo.
root, is the term used for the special user account that is controlled by the system administrator
It is never good practice for anyone to use root as their normal user account, because simple typographical errors can cause major damage to the system. It is recommended to create a normal user account instead and then use the su command to switch when necessary. Some use the sudo utility instead, which allows a measure of graduated access.
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