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  Linux Fundamentals: Complete Beginner's Guide with Simple Explanations Everything you need to know about Linux : 📅 Published: Feb 2026 ⏱️ Estimated Reading Time: 12 minutes 🏷️ Tags: Linux Basics, Command Line, Beginners Guide, File System, DevOps Foundation 🐧 What is Linux? History & Distributions What is Linux? Imagine Linux as the  operating system  (like Windows or macOS) that runs on most servers worldwide. But there's a key difference: Linux is  open-source , which means anyone can see how it works, modify it, and share it for free. It was created by  Linus Torvalds  in 1991 as a hobby project that grew into something huge! Why does this matter for you?  Because when you work in DevOps or system administration, you'll be managing Linux servers. Almost all websites, mobile apps (Android runs on Linux), cloud services, and supercomputers use Linux behind the scenes. What are Linux Distributions? Think of Linux as a car engine. Different com...