Is there a pictorial representation of Linux filesystem, to understand the Linux filesystem. Currently running Ubuntu 16.04 and I want to efficiently re-install, using 2 HDD, 1x250GB and 1x500GB. The 250GB being the faster drive.


4 Answers 4


Currently FileSystem Hierarchy Standard (FHS) is in version 2.3. To get an in-depth knowledge about it, Visit this page on Linux Foundation.

Also as answered by dr01, you can have a crisp knowledge about it at Wikipedia : FileSystem Hierarchy Standard.

Would like to add this beautiful image from this Source. I reference this image every now and then. But please note that none of the directories should be capitalized.

File System Hierarchy

Feel free to add-in more details.

  • 1
    This is the most attractive infographic except for the highly misleading use of SHOUTING CAPITAL LETTERS.
    – Rich
    Mar 28, 2018 at 21:51
  • 2
    @Rich Not only SHOUTING and misleading, it's actually incorrect, as /USR isn't the same as /usr. And /usr is correct... Mar 29, 2018 at 13:32
  • I just noticed it's also missing /lost+found, /net, /proc and /sys. There's an update at that URL that includes /proc, /media, and /srv, but it's still ALLCAPS, and it's still missing /lost+found, /net, and /sys.
    – Rich
    Apr 5, 2018 at 18:20
  • @AndrewHenle - I gave the author a prod on his blog there :-) I'd really like to print this out.
    – Rich
    Apr 5, 2018 at 18:29

The Filesystem Hierarchy Standard (FHS), maintained by the Linux Foundation, defines the filesystem hierarchy and directory structure and contents in all Linux distributions.

It is described here: Filesystem Hierarchy Standard | Wikipedia


This might be of some help.It gives a basic overview of the how directories and files exist in linux File System


You can also read the man page of hier which display each directory and its job.

$ man hier
       hier - description of the filesystem hierarchy

       A typical Linux system has, among others, the following directories:

       /      This  is  the  root  directory.   This  is  where the whole tree

       /bin   This directory contains executable programs which are needed  in
              single user mode and to bring the system up or repair it.

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