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I'm trying to understand Linux file system, and one of the question is:

1- Why there are multiple folders for executable files: /usr/bin, /usr/sbin/ and /usr/local/bin? Is there any differences between them ?

2- If I have an executable file and I want to add it to my system, which of the third latter locations is the best for me ?

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marked as duplicate by Gilles Jun 18 at 23:10

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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Search this site for FHS, you'll find a lot of info is already here + the Wikipedia article. Mull that over and see they cover your Q. –  slm Jun 18 at 19:24

2 Answers 2

up vote 6 down vote accepted
  1. Run man hier from the command line to get the answer to your first question.
  2. It depends. See /usr/bin vs /usr/local/bin on Linux
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Hehe, "man hier" reads in German somewhat like "man, [look] here!" Which sounds like an unfriendly call or hint to look at something obvious. :) –  try-catch-finally Jun 18 at 20:22
    
Heh, yes. hier stands for "hierarchy" in this case. –  denten Jun 18 at 20:28

It's called the Filesystem Hierarchy Standard and the gory details can be found here

Generally:-

/usr/bin is for user programs.

/usr/sbin is for system programs - those that are used by admins, but not general users.

Both the above begin with /usr and the standard states that these could be hosted on a shared server (using NFS, for example) and accessed by the various hosts on a network. The variants without the /usr (that is /bin and /sbin) are for essential programs that the system needs to boot (as the files in /usr tree won't be available if they're on a NFS share).

/local/bin are for locally compiled user programs.

If you have an executable, which wasn't installed using the system's package manager, then I suppose you should place it in /usr/local/bin if it's to be used by many users, or you could leave it in your home directory if it's only going to be used by yourself.

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