Linux, created in 1991 by Linus Torvalds, is an open-source operating system that is free, highly stable, and secure. It is widely used in servers, supercomputers, cloud systems, embedded devices, and smartphones through Android.
For everyday users, Windows is often enough. But for those who want to study computers in depth or pursue IT, learning Linux is an invaluable step because it reveals how operating systems, files, permissions, networks, and servers work under the surface.
If Windows symbolizes popularity and convenience, Linux is the invisible foundation that supports the internet and modern IT infrastructure. It may not always appear on a home desk, but it is constantly working behind the websites, apps, data centers, and connected devices we use every day.
In the previous article, we explored the Windows operating system. Today, let us take a closer look at Linux.
The Linux mascot is Tux, a small penguin that has become one of the most recognizable symbols in open-source culture. The mascot feels friendly, but the system behind it is serious and powerful. Linux is used by hobbyists, students, developers, companies, universities, governments, and research institutions around the world.
Among the operating systems we encounter today, Linux is always mentioned alongside Windows. Linux may not be as visible on ordinary consumer PCs, but in reality, it is one of the most widely used operating systems in modern society. It runs behind the scenes in the internet servers we rely on, in smartphones, in network equipment, and even in home appliances.
The history of Linux goes back to 1991, when Linus Torvalds, a student at the University of Helsinki in Finland, began developing it as a personal project. His goal was to create an operating system kernel that anyone could use freely. To achieve this, he released the source code openly so developers around the world could study it, improve it, and contribute fixes.
This approach became one of the best-known examples of the open-source philosophy, where software can be inspected, modified, shared, and improved by a community. Unlike Windows, Linux does not belong to a single company in the same way. Many companies support it, and many communities maintain it, but its strength comes from shared development across the world.
In its early days, Linux was mainly used by experts and developers, making it seem intimidating for general users. It was largely command-line based, requiring text commands rather than graphical interaction. Over time, however, Linux evolved. Today, many distributions such as Ubuntu, Fedora, Debian, Linux Mint, Arch Linux, and Rocky Linux make it possible to choose a Linux environment that fits different goals.
Ubuntu, in particular, is popular for beginners because of its simple installation process and user-friendly graphical environment. Linux Mint is often recommended to people coming from Windows because its desktop layout feels familiar. Debian is known for stability, Fedora for newer technologies, and Arch Linux for users who want to build a system more manually. These are all Linux, but each distribution has its own style.
What Makes Linux Different?
To understand Linux, it helps to separate the word into layers. Strictly speaking, Linux is the kernel, the core part of the operating system that communicates with hardware and manages resources. The full system people use usually combines the Linux kernel with many other tools, libraries, desktop environments, package managers, and applications.
This is why people often talk about Linux distributions. A distribution packages the Linux kernel together with everything needed to install and use a working operating system. It decides which package manager to use, which desktop environment to include, how updates are handled, and what default tools are provided.
For a beginner, this can feel confusing at first. Windows usually comes as one clear product from Microsoft, while Linux appears in many forms. But that variety is also Linux's strength. A lightweight distribution can revive an old laptop, a server-focused distribution can run a web service reliably for years, and a security-focused distribution can support penetration testing and digital forensics.
Comparing Linux and Windows
One of Linux's biggest advantages is that it is open-source and free. Unlike Windows, which usually requires a paid license, Linux can be freely downloaded and used by anyone. Its stability and security have also made it the standard for servers. The servers powering Google, Amazon, Naver, and countless other internet services run primarily on Linux. Even the Android operating system that drives most smartphones is based on Linux.
Windows is designed to be convenient for a very broad consumer audience. It supports many commercial programs, games, printers, scanners, graphics tools, office software, and hardware accessories. For many people, that convenience matters more than anything else. If the goal is simple everyday use, Windows is often the easiest choice.
Linux takes a different path. It gives users more control over the system, more transparency, and more flexibility. You can choose the desktop environment, install only the tools you need, automate tasks with scripts, manage servers through the terminal, and understand the file system more directly. This makes Linux especially attractive to developers, system administrators, cybersecurity learners, and people who enjoy understanding how computers work.
That said, there are downsides. Linux still lacks the broad compatibility that Windows offers. Many games and commercial applications are developed first for Windows, and some professional tools do not run natively on Linux. Although compatibility layers and alternative apps have improved, there are still cases where Windows is simply more convenient.
Moreover, while Linux has become more user-friendly, some tasks still require knowledge of command-line operations. This can be a barrier for beginners. The terminal is powerful, but it can feel unfamiliar if someone has only used graphical interfaces. The good news is that basic Linux commands are learnable, and once they become familiar, they often make computer work faster and more precise.
The Command Line and Package Managers
One reason Linux is loved by technical users is the command line. Instead of clicking through many menus, users can type commands to install software, move files, check system status, connect to remote servers, search logs, or automate repeated work. Commands such as ls, cd, cp, mkdir, grep, and ssh are simple building blocks, but they become very powerful when combined.
Package managers are another important idea. On Ubuntu and Debian-based systems, users commonly install software with apt. On Fedora, they may use dnf. On Arch Linux, pacman is used. A package manager downloads software from trusted repositories, installs dependencies, and helps keep programs updated.
This is different from the common Windows habit of searching the web, downloading an installer, and clicking through setup screens. Linux package managers make software installation more centralized and repeatable. For servers, that repeatability is a major advantage because administrators can install and update systems in a consistent way.
Linux in Servers and Infrastructure
Despite the challenges for some desktop users, Linux is essential for developers and server administrators. It is highly valued in professional environments such as programming, network management, security, cloud computing, DevOps, database operation, and server administration. Most of the world's supercomputers run on Linux, and organizations like NASA and major research institutions rely on it for critical systems.
Linux is especially strong on servers because it is stable, efficient, scriptable, and easy to run without a graphical interface. A server does not need fancy animations or a desktop background. It needs to respond to requests reliably, restart services when needed, store logs, manage users, protect files, and stay available for long periods. Linux is excellent at that kind of work.
Every time we open a website, stream a video, send a message, or use a cloud-based app, there is a good chance Linux is somewhere in the path. Web servers, database servers, load balancers, containers, routers, and cloud machines commonly use Linux. It is not always visible, but it is deeply woven into the internet.
Containers also made Linux even more important. Technologies such as Docker and Kubernetes rely heavily on Linux concepts like processes, namespaces, file systems, and resource control. Modern cloud development is difficult to understand fully without at least a basic understanding of Linux.
Linux in the Modern Era
Linux continues to evolve, with new distributions making it more approachable for individuals. It has also become the de facto standard in emerging fields like cloud computing, artificial intelligence (AI), cybersecurity, embedded systems, and the Internet of Things (IoT). Going forward, Linux will remain a vital part of digital life, quietly powering countless systems around us.
In AI and data science, Linux is common because many development tools, GPU drivers, libraries, and server environments are designed with Linux workflows in mind. Researchers and engineers often train models on Linux servers because they are easier to automate, monitor, and scale.
In embedded systems, Linux can be adapted to small devices such as routers, smart TVs, industrial machines, development boards, and smart home products. In education, it gives students a low-cost way to learn operating systems, programming, networking, and security without needing expensive software licenses.
Desktop Linux has also become more comfortable than it used to be. Modern desktop environments such as GNOME, KDE Plasma, Cinnamon, and XFCE provide graphical settings, app stores, file managers, and polished interfaces. A beginner can now use Linux for browsing, writing, coding, media playback, and basic productivity without living entirely in the terminal.
Windows vs. Linux in Perspective
For most people, Windows alone is sufficient. Everyday tasks like browsing, document editing, gaming, and video playback are easiest and most convenient in the Windows environment. Windows also offers the widest support for commercial software and hardware peripherals.
However, for those who want to deepen their understanding of computers or pursue IT careers, Linux is incredibly valuable. It represents the standard in areas like programming, server management, cybersecurity, AI research, web hosting, and cloud infrastructure. Learning Linux is not just about using a different OS. It is about gaining insight into how computers really work.
Thus, the choice depends on your goals. For convenience, Windows is more than enough. For advanced learning and IT expertise, Linux is indispensable. In fact, many organizations adopt a dual approach: Windows for office PCs and productivity, and Linux for servers and backend systems. Rather than direct competitors, the two systems often complement each other.
A practical learning path is to keep Windows as the main desktop and learn Linux gradually through a virtual machine, Windows Subsystem for Linux, an old laptop, or a cloud server. This lets beginners experiment without risking their main computer setup. Over time, commands, file permissions, package installation, and server concepts become less intimidating.
"Really, I'm not out to destroy Microsoft. That will just be a completely unintentional side effect." - Linus Torvalds
In the end, Linux may not always be visible, but it is a critical operating system that supports our everyday lives and digital society. If Windows transformed personal computing with convenience and accessibility, Linux shaped the internet and server world with stability and openness. For those who want to gain a deeper understanding of IT, Linux is absolutely worth exploring.
As computing expands into cloud, AI, cybersecurity, and IoT, Linux will continue to play an essential role, not just as a choice, but as a fundamental foundation. Learning it does not mean abandoning Windows or macOS. It means adding another powerful tool to your understanding of computers.
In this article, we explored the history, features, strengths, limitations, and modern role of Linux. The key point is simple: Linux may look quiet from the outside, but it is one of the main engines of today's digital world.
In the next article, we will take a look at the Android operating system. Thank you for reading, and I hope you have a wonderful day!
This article is also available in Korean: Read the Korean version