Linux User Management and Permissions for Beginners

Managing users, groups, and permissions is the foundation of Linux system administration and security. This course helps you transition from a basic user to a confident administrator who can secure systems and manage multi-user environments. You will learn how to configure accounts, control resource access, and implement modern security workflows. What you'll learn: - Understand the core Linux user and group architecture, including critical system files like /etc/passwd and /etc/shadow. - Create, modify, and remove user accounts and groups using standard command-line tools. - Manage file permissions and ownership using chmod, chown, and modern Access Control Lists (ACLs). - Configure administrative privileges securely using the sudoers file and visudo. - Apply modern security best practices, including key-based SSH authentication and the principle of least privilege. This text-only course begins with foundational concepts of Linux security and identity before moving into step-by-step administration workflows and command-line practice. It is designed specifically for beginners with no prior system administration experience. Start reading today to build a secure foundation in Linux administration.