 | Using root |
 | Understanding the /etc/passwd File |
 | Managing User Passwords |
 | Creating Users by Editing /etc/passwd |
 | Creating Users with useradd |
 | Modifying Users with usermod |
 | Deleting Users |
 | Special User Accounts |
 | Understanding Groups |
 | Creating Groups |
 | Identifying Default Groups |
 | Modifying and Deleting Groups |
 | Understanding Systems Groups |
 | Working with Shadow Passwords |
 | Understanding User Startup Files |