Understanding the Linux File System Hierarchy: A Complete Guide for Beginners When you first switch from Windows or macOS to Linux, the file structure can look like a confusing maze of short, cryptic folder names. Unlike Windows, which uses a "C: Drive" as the root, Linux follows a unified structure known as the Filesystem Hierarchy Standard (FHS) . In these notes, we will break down exactly where every file lives in your Linux system, why the directory structure is built this way, and the essential commands you need to navigate it like a pro. What is the Filesystem Hierarchy Standard (FHS)? The FHS is a set of guidelines that defines the main directories and their contents in Linux operating systems. Because of this standard, whether you are using Ubuntu, Fedora, Arch, or Kali Linux , the configuration files will almost always be in /etc and your user files will always be in /home . The Root Directory ( / ) Everything in Linux starts at the Root . It is represented by a sin...