DOS Command Index
Information about all current DOS commands
APPEND
(External)

APPEND ;
APPEND [d:]path[;][d:]path[...]
APPEND [/X:on|off][/path:on|off] [/E]

Displays or sets the search path for data files. DOS will search the
specified path(s) if the file is not found in the current path.

ASSIGN
(External)

ASSIGN x=y [...] /sta

Redirects disk drive requests to a different drive.


ATTRIB
(External)

ATTRIB [d:][path]filename [/S]
ATTRIB [+R|-R] [+A|-A] [+S|-S] [+H|-H] [d:][path]filename [/S]

Sets or displays the read-only, archive, system, and hidden attributes of
a file or directory.


BACKUP
(External)

BACKUP d:[path][filename] d:[/S][/M][/A][/F:(size)] [/P][/D:date]
[/T:time] [/L:[path]filename]

Makes a backup copy of one or more files. (In DOS Version 6, this program
is stored on the DOS supplemental disk.)


BREAK
(Internal)

BREAK =on|off

Used from the DOS prompt or in a batch file or in the CONFIG.SYS file to
set (or display) whether or not DOS should check for a Ctrl + Break key
combination.


BUFFERS
(Internal)

BUFFERS=(number),(read-ahead number)

Used in the CONFIG.SYS file to set the number of disk buffers (number)
that will be available for use during data input. Also used to set a value
for the number of sectors to be read in advance (read-ahead) during data
input operations.


CALL
(Internal)

CALL [d:][path]batchfilename [options]

Calls another batch file and then returns to current batch file to
continue.


CHCP
(Internal)

CHCP (codepage)

Displays the current code page or changes the code page that DOS will use.


CHDIR
(Internal)

CHDIR (CD) [d:]path
CHDIR (CD)[..]

Displays working (current) directory and/or changes to a different
directory.


CHKDSK
(External)

CHKDSK [d:][path][filename] [/F][/V]

Checks a disk and provides a file and memory status report.


CHOICE
(Internal)

CHOICE [/C[:]keys] [/N][/S][/T[:]c,nn] [text]