Which command is used to delete a user with superuser privileges?

The command used to delete a user is "userdel." This command is a standard utility found in Linux systems that allows administrators to remove a user account from the system. When executed with appropriate options, it can also handle the deletion of the user’s home directory, mail spool, and other associated files, depending on the flags utilized.

In the context of managing user accounts, it's particularly important for system administrators to understand how this command operates, particularly when it comes to maintaining security and permissions. "userdel" ensures that a user is completely removed, including any potential superuser privileges associated with that account when it is deleted.

Other potential choices, like "removeuser," "deleteuser," and "userremove," do not exist as standard commands in Linux and could either be specific to certain distributions as aliases or not valid at all. Thus, "userdel" stands out as the correct and recognized command for the task of deleting user accounts with superuser privileges.