Internal and External DOS Commands

An internal commands is an MS-DOS command that is stored in the system memory & loaded from the command.com or cmd.exe. The illustration shows how commands contained within command.com are part of the command.com file. However, with the external commands, each command is a separate file.

Listing of internal commands:

Below are examples of internal commands in MS-DOS & the Windows command line currently listed in the Tech4nep database.

Top 30 Important MCQ on Microsoft Word
Click on Photo to access Top30 MCQ on Word

Assoc
Atmadm
Break
Call
CD
Chdir
Cls
Color
Copy
Ctty
Date
Del
Dir
Pause
Popd
Prompt
Pushd Rd

Drivparm
Echo
Endlocal
Erase
Exit    
For
Goto
If
LH
Loadhigh
Lock
Md
Mkdir
Mklink
Move
Path

Ren
Rename
Rmdir
Set
Setlocal
Shift
Start
Switches
Time
Title
Type    Unlock
Ver
Verify
Vol

An external commands is an MS-DOS command that is not included in command.com. External commands are commonly external either because they require large requirements or are not commonly used commands. The illustration shows each of the external commands are separate files. However, the internal commands are all included in the command.com file.

Internal Commands and External Commands of DOS

Listing of external commands

Below are examples of external commands in MS-DOS & the Windows command line currently listed in the Tech4nep database.

Append
Arp
Assign
At
Attrib
Backup
Bcdedit
Bootsect
Cacls
Chcp
Chkdsk
Chkntfs
Choice
Cipher
Clip
Comp
Compact
Convert
Debug
Defrag
Delpart
Deltree
Diskcomp
Diskcopy
Doskey
Dosshell
Driverquery
Dumpchk

Edit
Edlin
Expand
Extract
Fasthelp
Fc
Fciv
Fdisk
Find
Forfiles
Format
FTP
Gpupdate
Graftabl
Help
Hostname
ICacls
Ipconfig
Label
Loadfix
logoff
Mem
Mode
More
Move
Msav
Msbackup
Mscdex
Mscdexnt
Mwbackup
Msd
Msg
Nbtstat
Net
Netsh
Netstat
Nlsfunc
Nslookup

Pathping
Ping
Power
Powercfg
Print
Reg
Robocopy
Route
Runas
Sc
ScanDisk
Scanreg
Schtasks
Setver
Sfc
Share
Shutdown
Smartdrv
Sort
Subst
Sys
Systeminfo
Taskkill
Tasklist
Telnet
Tracert
Tree
Tskill
Undelete
Unformat
Wmic
Xcopy

Internal and External DOS Commands
Click on Photo to get 30 MCQ on Access Part-I

DOS and Windows command line top 10 commands MS-DOS and Windows command line

Below is a listing of the top 10 MS-DOS commands most commonly used and are most likely be using during a normal DOS session.

cd
dir
copy
del
edit
move
ren (rename)
deltree
cls
format

Top 10 command pages

Below is a listing of the top 10 MS-DOS command pages by the amount of times they’re accessed on the Tech4nep server.

xcopy
copy
dir
net
format
del
attrib
cd
ping
set

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