File System Hierarchy Standard (FHS) in Linux

• The File System Hierarchy Standard (FHS) defines the directory structure and directory contents in Linux operating systems.
• Basically, it is a formalization and extension of the traditional Berkeley Software Distribution (BSD) file system hierarchy.
• The FHS is maintained by the Linux Foundation.
• In the FHS all files and directories appear under the root directory "/", even if they are stored on different physical or virtual devices.

Directories and their Description