What is Linux?

Linux is one of the most significant open-source software projects worldwide. It is similar to other operating systems, such as Windows and macOS, as it has a graphical interface. Linux also offers software that includes word processors, photo editors, and video editors. However, it is also different from other operating systems in many ways. This article will explain what Linux is, its components, and its features. We will also discuss some popular online Linux courses and the resources for learning Linux.

Linux, an open-source operating system, powers servers, networks, and devices worldwide due to its flexibility and security. Learning Linux is essential for careers in IT, cybersecurity, and development. Online Linux courses cover system administration, scripting, and troubleshooting, helping you gain practical skills and industry-recognized certifications for professional growth.

Linux: Definition and Scope

Linux is software that manages the hardware and resources of a desktop or laptop. It exists between applications and hardware. It builds the connections between the system’s software and the physical resources that perform the tasks.

The Linux operating system consists of the following:

1. Bootloader: This software manages the computer's boot process.
2. Kernel: This is the core and lowest level of the operating system. It manages the CPU, memory, and peripheral devices.
3. Graphical server: It displays the graphics on the monitor.
4. Daemons: These include background services such as printing and scheduling that start during boot or after logging into your system.
5. Init system: This sub-system bootstraps the user space and controls the daemons.
6. Desktop environment: It is the component that the users interact with.
7. Applications: An application is a kind of software that lets users perform a task. Applications include everything ranging from desktop tools to programming languages. Many Linux distributions provide a central database to download additional applications.

Also Read: Learn Basic Linux Commands (With Syntax)

Linux Features

Below are some of the notable features of the Linux operating system.

1. Free and open-source: Anyone can learn and get started with Linux for free. Linux has a huge amount of information and resources available. You can read the source code available on resources to understand what is going on under the hood. Its open-source nature allows multiple teams to collaborate to enhance the operating system's capability.
2. Portable: Linux kernel and application programs can be installed on any hardware platform.
3. Multi-User: Multiple users can access system resources such as memory and application programs at the same time.
4. Multi-tasking: Multiple functions can be performed simultaneously.
5. Shell: It is a special interpreter program that is used to execute commands of the operating system.
6. Security: Linux offers top-notch security using authentication, authorization, and encryption.
7. File System: It offers a hierarchical file system in which system files and user files are arranged.

What is Linux Used For?

The most common uses of Linux are as follows:

1. Smart Devices
2. Servers and Mainframes
3. Gaming
4. Supercomputers

History of Linux

Linux is a freely distributable version of Unix. In 1991, Linus Torvalds, a student at the University of Helsinki in Finland, began his project to create a freely available academic version of Unix. This project later became the Linux kernel.

Today, Linux OS is used in supercomputers, web servers, desktops, laptops, and home appliances such as washing machines, modems, routers, and refrigerators.

Also Read: Top Linux Interview Questions and Answers

Top Resources to Learn Linux

The following are some of the top resources to learn and master Linux:

Linux Books

Many books can transform you from a beginner to an expert in Linux. Here are some of the popular books to learn Linux concepts:

1. Linux Pocket Guide is a book written | Author: Jason Cannon
2. Linux Administration | Author: Jason Cannon
3. The Linux Command Line | Author: William Shotts
4. Linux Command Line and Shell Scripting Bible | Author: Richard Blum
5. How Linux Works | Author: Brian Ward

Online Courses

Online courses are one of the best resources to learn Linux. Top platforms such as Udemy, Coursera, and Pluralsight offer courses developed by top universities, industry experts, companies, and other organizations. You can find online courses for every skill level - beginner, intermediate and advanced.

Many online courses use a project-based or hands-on approach to teach Linux concepts from scratch. Earning a Linux course will help you elevate the level of your success in this field.

Top Linux Courses and Certifications

1. Learn Linux Administration and Supercharge Your Career on Udemy
2. Linux System Administration with IBM Power Systems on Coursera
3. Linux Administration Bootcamp: Go from Beginner to Advanced on Udemy
4. Linux Kernel and System Startup (LPIC-2) on Pluralsight
5. Linux for Absolute Beginners on Alison
6. The Complete Ubuntu Linux Server Administration Course on Udemy
7. Linux Command Line Basics on Udacity
8. Linux Fundamentals on Coursera
9. Linux Installation and Initial Configuration on Pluralsight

YouTube Tutorials

You will find many high-quality tutorials covering basic to advanced concepts. You will find many videos to learn the basic Linux commands as well as advanced Linux commands.

Top Industries That Use Linux

1. Internet
2. Finance
3. Healthcare
4. Education
5. Insurance

Popular Linux Jobs Profiles & Careers

The following are some popular job profiles that require Linux skills:

1. Linux Administrator
2. Linux Engineer
3. TechOps Engineer
4. Software Developer
5. Software Engineer
6. Senior Software Engineer
7. Systems Engineer
8. Systems Administrator
9. Technical Support
10. Application and Web programmer

Future of Linux

Linux has replaced UNIX and is dominating the computing field. It is widely used in supercomputers and embedded devices. While Linux has not been able to dominate the desktop space, it is an essential player in this field.

Due to its features, such as flexibility and open-source nature, Linux-based operating systems are now used in various connected devices. Linux is likely to revolutionize emerging technologies, including wearables, the Internet of Things (IoT), smart home devices, and more.

Conclusion

This article taught us that Linux is a free, open-source operating system. Anyone can run, modify, and redistribute the source code. We also covered the features, components, and future of Linux.

It is one of the most popular operating systems, and it is still evolving and growing. Many opportunities are available for freshers and experienced candidates in this field. If you want to learn Linux, take up an online Linux course today and begin your Linux journey.