I gave administrator permissions to my user account by accident, and I want to undo that. I cannot change the situation by entering the settings, nor by the terminal. As I am a newbie, I might be doing something wrong. I hope someone can help me.
When you execute the command you will be able to see certain output, I do not remember clearly what exactly will be written there followed by series of prompts. Simply follow them and confirm. Log in details. After that you have to enter any additional information about the new user. Now please Enter Y to continue and adduser command created a user, a group, and a home directory for your user. Here you go!I took that from one students blog so I hope it will be helpful for you.