Linux Basic Administration Concepts

/usr

The /usr directory is again structured based on use, as follows:

Directory Contents
/usr/bin
Executables of installed software
/usr/doc
Documentation, see also /usr/share/doc
/usr/games
Executables of games
/usr/include
C/C++ header files for installed libraries
/usr/lib
Installed libraries and other application files
/usr/local
Locally installed software (from source, not rpm)
/usr/man
Manual pages for the man command
/usr/sbin
Executables of installed system software for use mostly by root
/usr/share
Shared program data, such as graphics and documentation
/usr/src
Sources. Usually includes the source of the kernel.
/usr/X11R6
Files related to the X Windowing system (GUI)
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