Sudoer

What is a Sudoer on Linux?

A sudoer is an administrator-level user on Linux, more specifically, a user that can execute the sudo command.

Which users are sudoers is defined in the /etc/sudoers file. On some operating systems like Ubuntu, this file is preconfigured to make users in the sudo group sudoers, which means that you don't need to edit the file directly, simply adding a user to the sudo group is enough to make the user a sudoer¹.