Topics Covered:
✅ Linux Users & Groups Overview – Understanding user roles, permissions, and system accounts.
✅ Linux Password File (/etc/passwd) – Storing user account details and shell information.
✅ Linux Account Types – System accounts, regular users, root users, and service accounts.
✅ The Shadow File (/etc/shadow) – Securely storing encrypted passwords.
✅ Password & Shadow Files – Differences, security best practices, and how authentication works.
✅ The Group File (/etc/group) – Managing user groups and permissions efficiently.
