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Summary of Section 2.1 - C191: Operating Systems for Programmers (zyBooks)

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Introduction

An operating system (OS) provides the execution environment for programs. The structure and design of OSs vary significantly, making it essential to establish clear design goals before development. These goals help determine the appropriate algorithms and strategies to implement.

Three Perspectives on Operating Systems

1. Services Provided – The functionalities and capabilities offered by the OS.
2. User and Programmer Interface – The methods through which users and developers interact with the OS.
3. Internal Components and Structure – The architectural design and interconnections of OS components.

This section explores these perspectives, discussing OS services, debugging processes, and design methodologies. Additionally, it covers OS creation and the booting process.

Chapter Objectives

• Identify OS services and their functionalities.
• Explain system calls and how they facilitate OS operations.
• Compare OS design strategies, including:
  • Monolithic
  • Layered
  • Microkernel
  • Modular
  • Hybrid
• Illustrate the OS boot process and its key stages.
• Use performance monitoring tools to analyze OS efficiency.
• Develop Linux kernel modules for system interactions.

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Summary of Section 2.2 - C191: Operating Systems for Programmers (zyBooks)

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