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[[Image:directory-structure-1.png|thumb|right|350px|In Unix / Linux (as opposed to MS Windows), there are no drive letters (such as '''C:''', or '''D:''').<br><br> All files and directories appear under a single ancestor directory called "the '''root''' directory".<br><br>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 ("'''/'''").]]