What command is utilized to delete a user account on a Linux system?

In a Linux system, the command utilized to delete a user account is 'userdel'. This command removes the specified user's account and, optionally, their associated home directory and mail spool. It is an essential command for system administrators who need to manage user accounts effectively.

When using 'userdel', you can specify options such as -r to remove the user's home directory as well, ensuring that all personal files associated with the user are also deleted. This makes it a comprehensive solution for managing user accounts.

The other commands mentioned serve different purposes: 'groupdel' is used to delete a group, 'usermod' modifies existing user accounts, and 'groupadd' is for creating new groups. Understanding the specific function of each command helps in effective user and group management within a Linux environment.