Operating System Part 3 Notes

Introduction

• Hello everyone!
• Today we will discuss Part 3 of the Operating System.
• In the last video, we talked about Unix and Linux.

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Unix Operating System

Introduction to Unix

• Unix is a centralized operating system.
• The kernel manages the system and operates all tasks below it.
• The kernel can be understood by relating it to a military colonel.

Kernel and Shell

• Along with the kernel, the shell also acts as an interface between the user and the kernel.
• The shell is the medium of communication between the kernel and the user.

Examples of Unix

• IBM, Solaris, and Mac OS are some examples of Unix.
• Unix is an open-source operating system.

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Linux Operating System

Features of Linux

• Linux is an advanced form of Unix.
• It is open-source and free of cost.
• Linux was developed by Linus Torvalds.

Benefits and Uses of Linux

• Virus-free, secure, and supports multi-user, multitasking.
• Linux is available in various distributions (such as Kali Linux).
• Requires command-based usage, which can make it difficult for the general public to use.

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Differences Between Linux and Unix

• There is a functional difference between Linux and Unix.
• Linux is a clone of Unix, but its usage is more widespread.
• Linux uses a kernel and distributions.

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Key Features

1. Portability

• Linux can work on different types of hardware.

2. Open-Source

• Code can be edited and is available for free.

3. Multi-User and Multitasking

• Multiple users can access the system resources at the same time.

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Security

• Linux is a secure operating system and poses no threat of viruses.
• Password protection and other security features are available.

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Conclusion

• It is important to understand the key aspects of both Unix and Linux operating systems.
• In the next class, we will discuss more important topics.
• Don't forget to subscribe to the channel!