User Management

Learn about user roles and management.

0 of 6 lessons complete

Practice in terminal (Ubuntu sandbox) ↗

Syllabus

  1. 01 Users and Groups Learn how Linux identifies users and groups and how process credentials affect access decisions.
  2. 02 root Learn how su, sudo, and sudoers policy provide controlled access to privileged identities.
  3. 03 /etc/passwd Learn how to read local passwd records and distinguish them from the complete NSS account view.
  4. 04 /etc/shadow Learn how local shadow records represent password hashes and aging policy without exposing sensitive data.
  5. 05 /etc/group Learn how local group records map names to GIDs and list supplementary members.
  6. 06 User Management Tools Learn how to create, modify, secure, verify, and remove local accounts with explicit options.

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.