Syllabus

User Management Interactive Lessons

1Users and GroupsLearn how Linux identifies users and groups and how process credentials affect access decisions.
2rootLearn how su, sudo, and sudoers policy provide controlled access to privileged identities.
3/etc/passwdLearn how to read local passwd records and distinguish them from the complete NSS account view.
4/etc/shadowLearn how local shadow records represent password hashes and aging policy without exposing sensitive data.
5/etc/groupLearn how local group records map names to GIDs and list supplementary members.
6User Management ToolsLearn how to create, modify, secure, verify, and remove local accounts with explicit options.

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Before you begin

Frequently Asked Questions

What account files does this course explain?

You will learn the roles of /etc/passwd, /etc/shadow, and /etc/group, including how Linux stores account, password, and group information.

Which user-management tasks are covered?

The lessons cover users and groups, root access, account files, and common tools for creating, modifying, inspecting, and removing accounts.

Do these lessons require administrator access?

Reading the explanations does not, but many account changes require root or sudo privileges. Practice only in a system where you are authorized to administer users.

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