Here we are listing many common DOS  "Disk Operating System" commands. These commands may vary and/or not be available depending on the version of DOS you are running. DOS commands are issued at a DOS prompt (ie: c:\, c:\windows)

APPEND

ASSIGN

ATTRIB

BACKUP

BREAK (or BREAK=)

BUFFERS=

CALL

CD (or CHDIR)

CHCP

CHDIR

CHKDSK

CHOICE

CLS

COMMAND

COMP

COPY

COUNTRY=

CTTY

DATE

DBLSPACE

DEBUG

DEFRAG

DEL

DELOLDOS

DELTREE

DEVICE=

DEVICEHIGH=

DIR

DISKCOMP

DISKCOPY

DOS=

DOSKEY

DOSSHELL

DRIVPARM=

ECHO

EDIT

EDLIN

EMM386

ERASE

EXE2BIN

EXIT

EXPAND

FASTHELP

FASTOPEN

FC

FCBS

FDISK

FILES=

FIND

FOR

FORMAT

GOTO

GRAFTABL

GRAPHICS

HELP

IF

INCLUDE=

INSTALL=

INTERLNK

INTERSVR

JOIN

KEYB

LABEL

LASTDRIVE=

LH (or LOADHIGH)

LOADFIX

LOADHIGH

MD (or MKDIR)

MEM

MEMMAKER

MENUCOLOR=

MENUDEFAULT=

MENUITEM=

MIRROR

MKDIR

MODE

MORE

MOVE

MSAV

MSBACKUP

MSCDEX

MSD

MSHERC

MWAV

MWAVTSR

MWBACKUP

MWUNDEL

NLSFUNC

NUMLOCK=

PATH

PAUSE

POWER

PRINT

PROMPT

QBASIC

RD (or RMDIR)

RECOVER

REM

REN (or RENAME)

REPLACE

RESTORE

RMDIR

SCANDISK

SET

SETVER

SHARE

SHELL=

SHIFT

SIZER

SMARTDRV

SMARTMON

SORT

STACKS=

SUBMENU=

SUBST

SWITCHES=

SYS

TIME

TREE

TYPE

UNDELETE

UNFORMAT

VER

VERIFY

VOL

VSAFE

XCOPY

XCOPY32