Filesystem Hierarchy Standard is maintained by +The Linux Foundation .In FHS all files and directories appear under the root directory “/”, even if they are stored on different physical or virtual devices. Most Linux distributions follow the FHS.
If you’re coming from Windows, the Linux file system structure can seem particularly alien. The C:\ drive and drive letters are gone, replaced by a / and cryptic-sounding directories, most of which have three letter names.The Filesystem Hierarchy Standard (FHS) defines the structure of file systems on Linux and other UNIX-like operating systems. However, Linux file systems also contain some directories that aren’t yet defined by the standard.
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