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In DOS systems, file directory entries include a Hidden file attribute which is manipulated using the attrib command. Using the command line command dir /ah displays the files with the Hidden attribute. In addition, there is a System file attribute that can be set on a file, which also causes the file to be hidden in directory listings.
Attrib changes or views the attributes of one or more files. It defaults to display the attributes of all files in the current directory. The file attributes available include read-only, archive, system, and hidden attributes. The command has the capability to process whole folders and subfolders of files and also process all files.
MS-DOS / PC DOS and some related disk operating systems use the files mentioned here. System Files: [1] IO.SYS (or IBMBIO.COM): This contains the system initialization code and builtin device drivers; MSDOS.SYS (or IBMDOS.COM): This contains the DOS kernel. Command-line interpreter (Shell): COMMAND.COM: This is the command interpreter.
In computing, dir (directory) is a command in various computer operating systems used for computer file and directory listing. [1] It is one of the basic commands to help navigate the file system . The command is usually implemented as an internal command in the command-line interpreter ( shell ).
However, the DIR and CAT (Catalog) commands for displaying file data support the usual partial filenames, suffixes, and file dates. Under TRSDOS/LS-DOS 6.x files can be made invisible to the DIR and CAT commands, and can be displayed with the INV parameter (unless any files are password protected and the correct p/w is not given).
MS-DOS/PC DOS versions 4.0 and earlier assign letters to all of the floppy drives before considering hard drives, so a system with four floppy drives would call the first hard drive E:. Starting with DOS 5.0, the system ensures that drive C: is always a hard disk, even if the system has more than two physical floppy drives.
VFAT, a variant of FAT with an extended directory format, was introduced in Windows 95 and Windows NT 3.5. It allowed mixed-case Unicode long filenames (LFNs) in addition to classic 8.3 names by using multiple 32-byte directory entry records for long filenames (in such a way that old 8.3 system software will only recognize one as the valid directory entry).
PC DOS 1.0: FAT12: 1982: MS-DOS 1.25: FAT12: 1982: Commodore 64 / 1541: Commodore DOS (CBM DOS) 1984: PC DOS 3.0 / MS-DOS 3.0: FAT16: 1984: Classic Mac OS: Macintosh File System (MFS) 1985: Atari TOS: Modified FAT12: 1985: Classic Mac OS: Hierarchical File System (HFS) 1987: Compaq MS-DOS 3.31: FAT16B: 1988: AmigaOS v1.3: Amiga Fast File System ...