RickTheEngineer

Linux runs most of the internet, every Android phone, and the world's top 500 supercomputers. So what is it, really? 👇 In 1991, a 21-year-old student in Helsinki wanted Unix but couldn't afford it. So he wrote his own operating system "just as a hobby" and shared it for free. His name was Linus Torvalds, and version 0.01 was about 10,000 lines of code. Here's the part most people miss: Linux is technically just the KERNEL. It's the core that sits between your apps and your hardware, managing memory, running processes and talking to devices. Everything else gets built around that core: 🟩 Distributions (Ubuntu, Debian, Fedora, Arch) package it with tools, libraries and apps 🟩 The shell lets you talk to the system 🟩 The file system puts everything under one root: / 🟩 Permissions decide who can read, write or run each file 🟩 Processes are your running apps 🟩 Package managers (apt, dnf, pacman) install them That's why Docker containers are so light: they all share the host's Linux kernel instead of each running a whole OS. You don't need to memorize hundreds of commands. Learn these 7 ideas and VPSs, Docker and the cloud start to make sense. 💾 Save this for your next terminal session 💬 Which distro are you running? Tell me below 👇 #linux #opensource #programming #devops #techexplained