The document provides an overview of the key components of the Linux operating system, including: 1) The Linux kernel, which acts as a resource manager for processes, memory, and hardware devices. 2) Process and memory management systems that control how processes are allocated and memory is allocated and freed. 3) The file system which organizes how files are stored and accessed. 4) Device drivers that allow the operating system to interface with hardware. 5) The network stack which handles network protocols and connections. 6) Architecture-dependent code that provides hardware-specific implementations of core functions.

1. Linux Internal By:- BOSS Team Member CDAC-chennai

2. Linux Internal Introduction

3. Kernel

4. Process Management

5. Memory Management

6. File System

7. Device Driver

8. Network Stack

9. Architecture-dependent code

10. Introduction Operating System is a software designed to control the hardware of a system in order to allow users and application programs to make use of it.

11. Linux is a free operating system based on UNIX standards.

12. LINUX® is a registered trademark of Linus Torvalds.

13. Features of Linux. Multiprogramming

14. Multi-user

15. Secure

16. Fast

17. Components of Linux System Architecture of the GNU/Linux operating system

18. Components of a Linux System (Cont.)‏ When Linux is running in main memory,the it is divided in to two parts 1) User space. 2) Kernel space. User's applications are running in user space.

19. Kernel is running in kernel space. The system libraries (e.g. glibc) define a standard set of functions through which applications interact with the kernel, and which implement much of the operating-system functionality that does not need the full privileges of kernel code.

20. The Linux Kernel Kernel is a resource manager whether resource being managed is a process,memory,hardware device.

21. Short history of Linux kernel development.

22. Linux Kernel Types of Kernel Monolithic Kernel. (e.g. Linux kernel)‏

23. Micro kernel (e.g. Windows NT kernel,Mach kernel etc.)‏

24. Structure of monolithic and micro-kernel-based operating systems Monolithic kernel Micro Kernel

25. Linux Kernel 2.6.x Characteristics that differ between the Linux kernel and other Unix variants: Dynamic loading of kernel module

26. Preemptive

27. Symmetric multiprocessor (SMP) support.

28. Linux does not differentiate between threads and normal processes.

29. Linux provides an object-oriented device model with device classes,hotpluggable events and user-space device file system(sysfs).