| The older DOS FAT file systems have severe limitations on file names . These limitations no longer apply to Windows, but they do apply to DOS based systems such as DJGPP. A file name may consist of no more than 8 characters, followed by an optional extension of no more than 3 characters . This is commonly referred to as an 8.3 file name. Filenames are case insensitive. There are a couple of filenames which are treated specially. You can not name a file `aux' or `prn' . In some cases, you can not even use an extension, such as `aux.c' . These restrictions apply to DOS and also to at least some versions of Windows. |