/dev

When you get a new computer, it might not work in the way you want it to. That's where /dev comes in! /dev is short for "developer," and it's a place where programmers can create new tools or make changes to existing tools so that your computer works just the way you want it to. For example, a programmer might create a new way for your computer to save files or add a new game to your computer. So, /dev is a place where programmers can use their skills to create new things and make changes to your computer.