Everyone is always indebted.

I started a new VPS (Ubuntu18) and ranadduser

Room Number []:

It was time I tried searching in English, but I still didn't understand what I was saying.
What is thisRoom Number?

What role do you play?

Thanks for your professor.

  • Answer # 1

    As it is written here.

    In a situation where faculty and staff have their own laboratories and have extension telephones at universities, etc., it is a function that would have been useful in such an environment.

    This is not true for many current PC users, but the functionality remains as a remnant. You can ignore it if you don't need it.

  • Answer # 2


    Auxiliary information that is one of the finger information, office location.

  • Answer # 3

    adduser seems to be just a room number ^^;

  • Answer # 4

    When I searched on various pages, it seems that it has been in the old UNIX era and has a historical background.
    Room Numberis literally a room number, and it seems to be information that identifies the user in a room in a university, laboratory, or company.
    It seems that fields such as room numbers are also called "GECOS fields".

    Perhaps at that time UNIX was expensive and used by everyone connected to the server, so I think that such a field would be useful for managing each user.

    Reference link

    What can I do if I specify -gecos for adduser on Linux? Why is it named gecos? -I want to eat a free lunch

    Why does Linux ask for a room number when creating a user? \-Quora