Foundations of Unix and Linux System Internals

Ever wondered what really happens when you type a command in the terminal? This course demystifies the core components of Unix-like operating systems, providing a clear path to understanding the powerful engine running underneath. You'll move from being a user of the command line to an informed operator who understands how the system works at a fundamental level. This knowledge is essential for writing better scripts, troubleshooting performance issues, and appreciating the design principles that have made these systems so enduring. What you'll learn: - Understand the core Unix philosophy and the relationship between the kernel and user space. - Learn how processes are created, managed by the scheduler, and how they communicate using signals. - Explore the structure of the Unix file system, including inodes, permissions, and standard directories. - Practice using essential command-line utilities to inspect system activity and resource usage. - Grasp the role of modern service managers like systemd in the boot process and service lifecycle. - Discover the fundamental kernel concepts, like namespaces, that make modern containerization possible. The course starts with key terminology and the basic architecture of a Unix-like system, then progresses through practical explanations of process management, file systems, and system utilities. This course is designed for beginners. No prior knowledge of operating system internals is required, just a basic familiarity with using a command-line terminal. Begin your journey to understanding how Unix and Linux truly work.