List of DOS commands: Difference between revisions

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This article presentslists anotable list of[[command (computing)|commands]] usedprovided by the [[MS-DOS]] [[disk operating system]]s (DOS), especially as used on an [[x86IBM PC compatible]]-based [[IBMcomputer]]. PCOther compatibleDOS variants as well as the legacy [[Windows]]s [[shell (PCscomputing)|shell]], [[Command Prompt]] (cmd.exe), provide many of these commands. Many other DOS variants [[List of DOSdisk operating systems#Other operatingcalled systemsDOS|Otherare DOSinformally operatingcalled systems''DOS'']], but are not partincluded ofin the scope of thisthe list. The highly related variant, [[IBM PC DOS]], is included. The list is not intended to be exhaustive, but does include commands covering the various releases.

Each command is implemented either as [[shell builtin|built-in]] to the [[command-line interpreter|command interpreter]], [[COMMAND.COM]], or as an external [[computer program|program]]. Although prevailing style is to write command names in all caps, the interpreter matches ignoring case.

In DOS, many standard [[system command]]s were provided for common tasks such as listing files on a disk or moving files. Some commands were built into the command interpreter, others existed as external commands on disk. Over the several generations of DOS, commands were added for the additional functions of the operating system. In the current [[Microsoft Windows]] operating system, a text-mode command prompt window, [[cmd.exe]], can still be used.

{{Horizontal TOC|nonum=yes}}

==Commands==

==Command processing==

'''''The command interpreter for DOS runs when no application programs are running. When an application exits, if the transient portion of the command interpreter in memory was overwritten, DOS will reload it from disk. Some commands are internal—built into COMMAND.COM; others are external commands stored on disk. When the user types a line of text at the operating system command prompt, COMMAND.COM will parse the line and attempt to match a command name to a built-in command or to the name of an executable program file or [[batch file]] on disk. If no match is found, an error message is printed, and the command prompt is refreshed.'''''

'''''External commands were too large to keep in the command processor, or were less frequently used. Such utility programs would be stored on disk and loaded just like regular application programs but were distributed with the operating system. Copies of these utility command programs had to be on an accessible disk, either on the current drive or on the command [[PATH (variable)|path]] set in the command interpreter.'''''

'''''In the list below, commands that can accept more than one file name, or a filename including wildcards (* and ?), are said to accept a <kbd>[[filespec]]</kbd> (file specification) parameter. Commands that can accept only a single file name are said to accept a <kbd>filename</kbd> parameter. Additionally, command line switches, or other parameter strings, can be supplied on the command line. Spaces and symbols such as a "/" or a "-" may be used to allow the command processor to parse the command line into filenames, file specifications, and other options.'''''

'''''The command interpreter preserves the case of whatever parameters are passed to commands, but the command names themselves and file names are case-insensitive.'''''

'''''Many commands are the same across many DOS systems, but some differ in command syntax or name'''''.

==DOS commands==

A partial list of the most common commands for [[MS-DOS]] and [[IBM PC DOS]] follows below.

===APPEND===

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===ASSIGN===

'''{{Further|Drive letter assignment}}
The command redirects requests for disk operations on one drive to a different drive. It can also display drive assignments or reset all drive letters to their original assignments.'''{{Further|Drive letter assignment}}'''

The command is available in MS-DOS versions 3 through 5 and IBM PC DOS releases 2 through 5.<ref name="RUNNINGMSDOS" />'''

=== ATMDM ===

''Lists connections and addresses seen by Windows [[Asynchronous Transfer Mode|ATM]] call manager.''

=== ''ATTRIB'' ===

{{Main|ATTRIB}}

'''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.'''

The command is available in MS-DOS versions 3 and later.<ref name="RUNNINGMSDOS" />

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{{Main|choice (command)}}

The CHOICE command is used in batch files to prompt the user to select one item from a set of single-character ''choices''. Choice was introduced as an external command with MS-DOS 6.0;<ref name="RUNNINGMSDOS" /><ref>{{cite web|url=http://www.computerhope.com/choicehl.htm|title=MS-DOS choice command help|access-date=10 September 2014}}</ref> [[Novell DOS]] 7<ref name="drdos7ch7">{{cite web|url=http://www.drdos.com/dosdoc/usergeng/07ugch7.htm|title=Caldera DR-DOS 7.03 User Guide|access-date=10 September 2014|archive-date=2015-09-23 |archive-url=https://web.archive.org/web/20150923220343/http://www.drdos.com/dosdoc/usergeng/07ugch7.htm|url-status=deadusurped}}</ref> and PC DOS 7.0. Earlier versions of [[DR-DOS]] supported this function with the built-in ''switch'' command (for numeric choices) or by beginning a command with a question mark.<ref name="drdos7ch7" /> This command was formerly called ync (yes-no-cancel).

===CLS===

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Deletes a directory along with all of the files and subdirectories that it contains. Normally, it will ask for confirmation of the potentially dangerous action. Since the RD (RMDIR) command can not delete a directory if the directory is not empty (except in Windows NT & 10), the DELTREE command can be used to delete the whole directory.

The <code>deltree</code> command is included in certain versions of [[Microsoft Windows]] and [[MS-DOS]] [[operating system]]s. It is specifically available only in versions of [[MS-DOS]] 6.0 and higher,<ref name="RUNNINGMSDOS" /> and in [[Windows 9x|Microsoft Windows 9x]]. In Windows NT, the functionality provided exists but is handled by the command {{mono|rd}} or {{mono|rmdir}} which has slightly different syntax. This command is not present in Windows 7 and 8. In Windows 10, the command switch is {{kbd|RD /S}} or {{kbd|RMDIR /S}}.

===DIR===

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{{Main|MS-DOS Editor}}

EDIT is a full-screen [[text editor]], included with MS-DOS versions 5 and 6,<ref name="RUNNINGMSDOS" /> OS/2 and Windows NT to 4.0. The corresponding program in Windows 95 and later, and Windows 2000 and later is Edit v2.0. PC DOS 6 and later use the [[E (PC DOS)|DOS ''E'' Editor]] and DR-DOS used ''editor'' up to version 7.

===EDLIN===

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===INTERSVR and INTERLNK===

{{Main|Interlnk}}

In MS-DOS; <kbd>filelink</kbd> in DR-DOS.

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The command is available in MS-DOS versions 3.1 and later and IBM PC DOS releases 3 and later.<ref name="RUNNINGMSDOS" />

=== LASTDRIVE ===

Used in the CONFIG.SYS file to set the maximum number of drives that can be accessed.

The command is available in MS-DOS versions 3.0 and later.<ref>{{Cite web |title=DOS Command: LASTDRIVE |url=https://easydos.com/lastdrive.html |access-date=2025-04-05 |website=easydos.com}}</ref>

===LINK4===

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{{See also|Prompt (computing)}}

The {{mono|PROMPT}} command allows the user to change the prompt in the command screen. The default prompt is {{mono|$p$g}} (i.e. {{kbd|PROMPT $p$g}}), which displays the drive, andthe current path, and a greater than sign ">" as the prompt, but can be changed to anything. {{kbd|PROMPT $d}}, displays the current system date as the prompt. Type {{kbd|PROMPT /?}} in the cmd screen for help on this function.

The command is available in MS-DOS versions 2 and later and IBM PC DOS releases 2.1 and later.<ref name="RUNNINGMSDOS" />

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{{See also|format (command)}}

MS-DOS version 5 introduced the quick format option (<code>Format /Q</code>) which removes the disk's file table without deleting any of the data. The same version also introduced the UNFORMAT command to undo the effects of a quick format, restoring the file table and making all the files accessible again. It is important to note that

UNFORMAT only works if invoked before any further changes have overwritten the drive's contents.<ref name="RUNNINGMSDOS" />

=== VER ===

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=== VERIFY ===

Enables or disables the feature to determine if files have been correctly written to disk (You can enable the verify command by typing "verify on" on Command Prompt and pressing enter. To display the current VERIFY setting, type VERIFY without a parameter. To turn off the feature, type "verify off"). If no parameter is provided, the command will display the current setting.<ref>{{cite web|url=http://www.csulb.edu/~murdock/verify.html|title=DOS Command: VERIFY|access-date=10 September 2014}}</ref>

The command is available in MS-DOS versions 2 and later.<ref name="RUNNINGMSDOS" />

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== See also ==

* [[:Category:Windows commands]]

* [[Command-line interface]]

* [[List of CONFIG.SYS directives]]

* [[Timeline of DOS operating systems]]

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*[https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/windows-commands Command-Line Reference] : Microsoft TechNet Database "Command-Line Reference"

*[https://technet.microsoft.com/en-us/library/cc749839.aspx The MS-DOS 6 Technical Reference on TechNet] contains the official Microsoft MS-DOS 6 command reference documentation.

*[http://www.drdos.com/dosdoc/ DR-DOS 7.03 online manual] {{Webarchiveusurped|url1=[https://web.archive.org/web/20180821031854/http://www.drdos.com/dosdoc/ |date=2018DR-08-21DOS 7.03 online manual]}}

*[http://www.mdgx.com/secrets.htm MDGx MS-DOS Undocumented + Hidden Secrets]

*[https://github.com/microsoft/MS-DOS MS-DOS v1.25 and v2.0 source code]