Linux: the open OS that runs Android and the internet
Linux is a free operating system kernel created by Linus Torvalds in 1991. Android, most internet servers, routers, smart TVs, car systems and desktop distributions (Ubuntu, Fedora, Linux Mint) are built on it.

In plain words
The Linux kernel is like a pizza dough recipe published free for everyone. Some people make a margherita with it (Ubuntu), some a seafood pizza (Fedora), and some a completely different dish, like Android. Same base, different flavours.
How it works
- The kernel manages the processor, memory and devices.
- Its code is open - anyone can read and change it.
- Distributions add a desktop, programs and tools.
- Thousands of developers worldwide improve the system.
- Android uses the Linux kernel with its own layer on top.

Where you'll see it
Almost all servers and clouds, routers (including OpenWrt), smart TVs, Android devices, the Steam Deck (SteamOS), cars and smart homes. For laptops: Ubuntu, Linux Mint, Fedora.
Does it matter when buying
Most people never notice Linux, but it works every day in their phone and router. If you want to learn programming or "revive" an old laptop, Linux Mint or Ubuntu is a good start. Games increasingly run on Linux too.
Myths
- Myth: Linux is only for hackers. Reality: Modern distributions are beginner-friendly.
- Myth: You cannot game on Linux. Reality: Thanks to Proton and Steam, many games run on Linux.
FAQ
What is a distribution?
A ready-made Linux package with programs and a desktop.
Is Linux free?
Mostly, yes.
Can I install Linux alongside Windows?
Yes, in dual-boot mode.