Linux Interview Questions and Answers for UserManagement Basic and Intermediate

This guide provides essential instructions and intermediate-level knowledge for managing user accounts in Linux. It is designed to cover both foundational and more advanced concepts for administrators. Basic User Management: Adding a New User: Learn how to create new user accounts, complete with setting up their home directories and assigning default permissions. Deleting a User Account: Discover the methods for safely removing user accounts, including options to retain or delete user files. Changing a User's Password: Understand how to update or reset user passwords securely using command-line tools. Intermediate User Management: Understanding System Files: Get a detailed explanation of critical files like /etc/passwd, /etc/shadow, and /etc/group, which store user account information, encrypted passwords, and group memberships. Modifying User Properties: Learn techniques to change user settings, such as the default shell, home directory, or user ID, using tools like usermod. Locking and Disabling Accounts: Explore methods to temporarily lock or disable user accounts for security or administrative purposes. Switching User Accounts: Find out how to assume another user’s identity, including root, without needing their password, using tools like su or sudo. Listing All Users: Understand how to retrieve a comprehensive list of all users on the system, using commands to query user-related files or system settings.