The hierarchical structure resembles an "upside- down tree". There is actually a command called tree that can display a "tree diagram"!

A '''path''', the general form of the name of a file or directory, specifies a '''unique location''' in a file system. A path points to a file system location by '''following the directory tree hierarchy''' expressed in a string of characters in which path components, separated by a delimiting character, represent each directory. The '''delimiting character''' is most commonly the slash ("'''/'''").