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linux.com
https://www.linux.com/what-is-linux/
What is Linux? - Linux.com
Looking to get started in Linux? Develop a good working knowledge of Linux using both the graphical interface and command line across the major Linux distribution families with The Linux Foundation’s Intro to Linux online course.
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linux.org
https://www.linux.org/pages/download/
Download Linux | Linux.org
24 Popular Linux Distributions Explore different Linux distributions and find the one that fits your needs. Try distrowatch.com for more options.
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geeksforgeeks.org
https://www.geeksforgeeks.org/linux-unix/introduct…
Introduction to Linux Operating System - GeeksforGeeks
Linux is a free, open-source operating system known for its flexibility, stability, and strong security. It is widely used in personal computing, server environments, and enterprise systems because of its performance and customization capabilities.
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redhat.com
https://www.redhat.com/en/topics/linux/what-is-lin…
What is Linux? - Red Hat
What is Linux? Linux® is an open source operating system (OS) created by Linus Torvalds in 1991. Today, it has a massive user base, and is used in the world’s 500 most powerful supercomputers. Users gravitate toward it for its versatility and security capabilities, among other reasons.
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tecmint.com
https://www.tecmint.com/what-is-linux/
Introduction to Linux? and How Does Linux Work? - Tecmint
Linux is an open-source, community-developed operating system with the kernel at its core, alongside other tools, applications, and services. Like any other operating system like Windows or MAC, it manages the hardware resources of a system such as CPU, RAM, and storage.
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techradar.com
https://www.techradar.com/best/best-linux-distros
Best Linux distro of 2025 - TechRadar
We list the best Linux distros, to make it simple and easy to choose which Linux OS best suits your needs, whether as a new or experienced user.
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linuxfordevices.com
https://www.linuxfordevices.com/tutorials/what-is-…
What is Linux? A Beginner’s Introduction - LinuxForDevices
Linux-based operating systems are used in various environments, from personal computers and servers to smartphones, routers, and embedded devices. Common Linux distributions include Ubuntu, Fedora, Debian, Arch Linux, and CentOS.
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ubuntu.com
https://ubuntu.com/download
Download - Get Ubuntu
Download Ubuntu Ubuntu is the world’s favourite Linux operating system. Run it on your laptop, workstation, server or IoT device, with five years of free security updates.
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wikipedia.org
https://en.wikipedia.org/wiki/Linux_kernel
Linux kernel - Wikipedia
Since the late 1990s, it has been included in many operating system distributions, many of which are called Linux. One such Linux kernel operating system is Android which is used in many mobile and embedded devices.
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linuxfoundation.org
https://training.linuxfoundation.org/training/intr…
Introduction to Linux (LFS101) - Linux Foundation - Education
Develop a good working knowledge of Linux using both the graphical interface and command line with this free introduction to Linux course.