Research file-naming conventions for four different operating systems (not including UNIX, MS-DOS, Windows, or Linux). Note the acceptable range of...

Research file-naming conventions for four different operating systems (not including UNIX, MS-DOS, Windows, or Linux).  Note the acceptable range of characters, maximum length, case sensitivity, etc.  Give examples of both acceptable and unacceptable filenames. Explain how the File Managers for those operating systems shorten long filenames (if they do so) on their private lists to make them easier to manipulate.  Cite your sources.