MS -DOS Internal Commands

The internal commands reside in COMMAND.COM, which loads into memory when the computer system is started; these commands do not reside on disk.
BREAK
CALL
CHCP
CHDIR(CD)
CLS
COPY
CTTY
DATE
DEL(ERASE)
DIR
ECHO
EXIT
FOR
GOTO
IF
MKDIR(MD)
PATH
PAUSE
PROMPT
REM
RENAME(REN)
RMDIR(RD)
SET
SHIFT
TIME
TYPE
VER
VERIFY
VOL