Chapter 5: Managing Linux User Accounts
In this chapter, you'll learn what Linux user accounts are, how to create, modify, and delete users and groups, and how to manage passwords in Linux. Keywords: linux user accounts, useradd linux, linux user management
In Chapter 4 of the LFCA Certification Course,, you completed Module 1 by covering the networking commands used to inspect interfaces, test connectivity, resolve hostnames, and check open ports, and that wrapped up the Linux Fundamentals foundation this module builds on.
The Module 2 starts here, and it's the biggest domain on the LFCA exam at 30%, which means it deserves more preparation time than any other module in this course.
This chapter covers Linux user account management - how Linux thinks about users and groups, the files that store that information, and the commands you'll use to create, modify, and i user accounts and groups on a real system
If you've ever been locked out of a server because of a misconfigured account, or inherited a system where nobody knows which users still need access, you'll understand immediately why this topic is worth getting right.
Every command in this chapter was tested on Ubuntu 26.04 LTS, but they work on any modern Linux distribution including Debian, Fedora, Rocky Linux, and RHEL.