V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

FHS
       File system Hierarchy Standard (Linux, LSB)


The Free On-line Dictionary of Computing (30 December 2018):

Filesystem Hierarchy Standard
FHS

    (FHS) A standard designed to be used by
   Unix distribution developers, package developers, and
   system implementors.

   FHS consists of a set of requirements and guidelines for
   file and directory placement under UNIX-like operating
   systems.

   The guidelines are intended to support interoperability of
   applications, system administration tools, development tools,
   and scripts.  These systems should also be supported with
   greater documentation uniformity.

   The standard is primarily intended to be a reference and is
   not a tutorial on how to manage a Unix filesystem or directory
   hierarchy.

   (http://pathname.com/fhs/).

   RedHat deviation
(http://redhat.com/corp/support/manuals/RHL-6.0-Manual/install-guide/manual/doc084.html).

   (2001-05-24)