GNU/Linux File System hierarchy (FSH)
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The GNU/Linux File System is organized as a hierarchy. If you are coming from a Microsoft Windows Operating System environment, the first thing you may notice is the difference in File System Hierarchy. Unlike Microsoft Windows Operating Systems, which provides a separate hierarchy for every partition, GNU/Linux provides a single hierarchy that includes every partition. The top level directory of the GNU/Linux File System tree is the root directory, represented by a forward slash (/). All other directories come under the root directory (/).




The root directory, the top-level directory in the FHS. All other directories are subdirectories of root


Essential command line utilities.


Includes Linux startup files, including the Linux kernel.


Device Files


Most of the configuration files are stored here


Home directories for almost every user.


Program libraries for the kernel and various command line utilities.


The mount point for removable media, including floppy drives, DVDs, and Zip disks.


A legacy mount point; formerly used for removable media.


The standard mount point for network directories


Common location for third-party application files.


A virtual File System. Currently running kernel-related processes, including device assignments such as IRQ ports, I/O addresses, and DMA channels, as well as kernel configuration settings such as IP forwarding.


The home directory of root user (superuser)


System Administration Commands


Currently configured settings associated with Security Enhanced Linux.


Temporary files. Red Hat Enterprise Linux deletes all files in this directory periodically.


Programs, libraries, documentation etc. for all user-installed programs.


Variable data, including log files and printer spools.

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