Episode 35 — Linux Fundamentals: Files, Users, and Groups

Linux plays a major role in modern security operations, and this episode introduces its foundational structure. You’ll learn how everything in Linux—files, devices, processes—is represented as part of a unified directory tree. The discussion covers how file paths, mounting, and permissions create predictable, auditable environments, and how user and group management enforce access separation. Understanding these basics not only prepares you for the exam but helps you interpret how open-source systems differ from Windows in both philosophy and control.We continue with examples of core commands like ls, chmod, and chown, showing how they reflect Linux’s transparent approach to security. You’ll also hear how configuration files in /etc define users, groups, and system behavior, making them central evidence sources during audits or investigations. The episode links these core concepts to broader cybersecurity skills—privilege modeling, configuration management, and monitoring. By the end, you’ll see why every security professional, regardless of platform specialty, benefits from fluency in Linux fundamentals. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your educational path. Also, if you want to stay up to date with the latest news, visit DailyCyber.News for a newsletter you can use, and a daily podcast you can commute with.

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