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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.
Several operating systems provided a set of modifiable file characteristics that could be accessed and changed through a low-level system call.For example, as of release MS-DOS 4.0, the first six bits of the file attribute byte indicated whether or not a file was read-only (as opposed to writeable), hidden, a system file, a volume label, a subdirectory, or if the file had been "archived" (with ...
Most DOS/Windows commands will match files with no extension even when given a *.* pattern. /S (none) Selects matching files in subdirectories. By default, only the single, specified directory is searched. /C command Execute the given command for each matching file. The command string typically needs to be wrapped in double quotes.
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. The command is available in MS-DOS versions 3 and later. [1]
Hidden (H): When set, indicates that the hosting file is hidden. MS-DOS commands like dir and Windows apps like File Explorer do not show hidden files by default, unless asked to do so. [4] System (S): When set, indicates that the hosting file is a critical system file that is necessary for the computer to operate properly. MS-DOS and Microsoft ...
APPEND: Set a search path for data files. ASSIGN: Redirect requests for disk operations on one drive to a different drive. ATTRIB: Set or display file attributes. BACKUP / RESTORE: simple backup and restore utilities. CHKDSK: Check disk for file system integrity. COMP: File compare utility. DEBUG: Simple command line debugger.