A "lightweight" GNU/Linux distribution that "tries to keep it simple". Unlike most distros, Arch Linux's bootable ISO contains no guided installer or desktop environment: instead, you are dropped to a "root@archiso" shell prompt, in which you are expected to configure everything yourself. Expert command-line users will feel right at home using Arch Linux. It is not suggested for beginners, unlike Ubuntu
Hey, I installed Arch Linux on my computer yesterday!
The sole command which will completely destroy a Linux system. This is because it forcefully deletes the root directory "/" recursively. In other words, it will wipe your entire hard drive.
Person 1: Hey my Linux system won't boot!
Person 2: What did you do before it wouldn't boot?
Person 1: I ran "sudo rm -rf / --no-preserve-root"
Person 2: That's why it won't boot - you have just wiped your entire hard drive.
Person 1: Dang.