To sudo or not to sudo - that is the question!
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Not unlike other Linux distributions, Ubuntu has the root account disabled by default and requires you to use 'sudo' in a terminal session to execute commands that normally require root level or elevated privileges. There are several different schools of thought here and I can clearly see both sides, so I'm not a good person to debate with on this. What I will do is give you the knowledge to decide for yourself which school you want to attend. :)