1. Introduction to Linux

Summary

This class introduces Linux system administration basics, ideal for beginners in IT. It covers the fundamental concepts of Linux, including its role as a kernel, different distributions like Ubuntu, and its widespread use in cloud computing, mobile apps, and IoT. The course also explores why Linux skills are in high demand for developers and system administrators. Special focus is given to Ubuntu, with explanations of LTS (Long-Term Support) vs. non-LTS versions, as well as the benefits of Ubuntu Pro, which offers extended support and additional packages. The class aims to help learners build a strong foundation in Linux.

Takeaways

• 😀 Linux is a **kernel**, not just an operating system, and was developed by Linus Torvalds in 1991.
• 😀 Linux acts as a bridge between **hardware** and the **operating system**, allowing communication between the two.
• 😀 There are over **100 Linux distributions**, with **Ubuntu** being one of the most beginner-friendly options.
• 😀 Ubuntu is based on **Debian** and is commonly used for its ease of use and accessibility for new users.
• 😀 **LTS (Long-Term Support)** versions of Ubuntu are supported for **5 years**, while **Non-LTS** versions only for **9 months**.
• 😀 **Ubuntu Pro** offers an extended **10-year support** period and additional packages for **commercial use**.
• 😀 Linux is widely used in fields like **cloud computing**, **mobile applications**, and **IoT**, making it a crucial skill for developers.
• 😀 Around **85.5% of smartphones** globally, like Android, run on Linux as their base operating system.
• 😀 Approximately **96.3% of the world's web servers** rely on Linux for their operation.
• 😀 The **500 fastest supercomputers** in the world use Linux as their operating system, highlighting its performance and scalability.
• 😀 Learning Linux can enhance your **career prospects** in system administration, development, and IT-related fields.
• 😀 Ubuntu versions follow a naming pattern where **even-numbered versions** are **LTS**, and **odd-numbered versions** are **Non-LTS**.

Q & A

What is the main focus of this Linux system administration class?

The main focus of the class is to teach beginners the basics of Linux, particularly for those new to IT or just starting out in the field of Linux system administration.

What is the role of Linux in the IT world, according to the video?

Linux plays a crucial role in IT, especially in fields like web hosting, cloud computing, mobile applications, IoT, and system administration. It is widely used in server environments and by developers for hosting and backend services.

What is Linux, and how is it different from an operating system?

Linux is a kernel, not a full operating system. The kernel acts as a bridge between the hardware and the operating system, allowing communication between the two.

Who developed Linux, and when was it first released?

Linux was developed by Linus Torvalds in 1991.

What is the significance of Linux distributions, and how many are there?

Linux distributions are various versions of Linux tailored for different uses. There are over 100 distributions, with some of the most common ones being Ubuntu, Debian, CentOS, and Red Hat.

Why is Ubuntu recommended for beginners in the video?

Ubuntu is recommended for beginners because it is user-friendly and has a large community that provides support, making it easier for new users to get started with Linux.

What is the difference between LTS and non-LTS versions of Ubuntu?

LTS (Long-Term Support) versions of Ubuntu receive security and maintenance updates for 5 years, while non-LTS (normal release) versions only receive support for 9 months.

What are the benefits of using Ubuntu Pro?

Ubuntu Pro provides extended support for 10 years, additional security updates, and access to 23,000 extra packages, which is beneficial for commercial or business use.

How is Ubuntu Pro different from standard Ubuntu LTS?

Ubuntu Pro offers longer support (10 years compared to 5 years for LTS), and it includes additional packages for advanced use, particularly suited for enterprise or commercial environments.

What does the version number of an Ubuntu release indicate?

The version number of an Ubuntu release usually indicates the year and month of its release. For example, 14.04 refers to April 2014, and even-numbered versions are LTS releases, while odd-numbered versions are non-LTS.