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#Post#: 200--------------------------------------------------
Re: Baisc DOS command
By: Ella Gonzales Date: August 21, 2016, 9:41 am
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INTERNAL COMMANDS
These are those commands which are contained in command.com
files of MS-DOS.
These are those functions that are built into the command
interpreter.
There is no need of any external file in computer to read
internal MS-DOS command.
These commands can be used as long as DOS is running on the
system.
Internal commands do not vary from system to system.
These are ver, time, del, md, cd, copy con, cls, date, vol, ren,
copy etc.
EXTERNAL COMMANDS
These are those commands which are not in-built in MS-DOS.
External commands are those which are not included in the
interpreter.
There is a need of an internal file in the computer to read
external MS-DOS command.
#Post#: 204--------------------------------------------------
Re: Baisc DOS command
By: NeilChristianCapanzana Date: August 21, 2016, 9:50 am
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The following is a list of MS-DOS version 5.0 internal and
external 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. The external commands are
files that do reside on disk and have an extension of .COM,
.EXE, or .BAT. Both command types are executed from the MS-DOS
prompt.
Internal Commands
BREAK
CALL
CHCP
CHDIR(CD)
CLS
xternal Commands
APPEND.EXE
ASSIGN.COM
ATTRIB.EXE
BACKUP.EXE
CHKDSK.EXE
COMMAND.COM
COMP.EXE
DEBUG.EXE
DISKCOMP.COM
DISKCOPY.COM
#Post#: 217--------------------------------------------------
Re: Baisc DOS command
By: ArdenielMendoza Date: August 21, 2016, 10:51 am
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The internal commands reside in COMMAND.COM, which loads into
memory when the computer system is started; these commands do
not reside on disk.
example:BREAK, DATE, TIME
The external commands are files that do reside on disk and have
an extension of .COM, .EXE, or .BAT. Both command types are
executed from the MS-DOS prompt.
example:APPEND.EXE, ASSIGN.COM, ATTRIB.EXE
#Post#: 228--------------------------------------------------
Re: Baisc DOS command
By: joycepascua28@gmail.com Date: August 22, 2016, 12:36 am
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[quote author=Marwin.Garcia.XD link=topic=6.msg48#msg48
date=1471619501]
Internal commands
Internal commands are DOS commands embedded into cmd.exe shell.
They are always available to the user and tend to focus on file
and folder commands. An example of a internal command would be
"CLS" to clear the screen.
External commands
External commands are not located in the shell but are in
program files stored on disk. They are a combination of .exe and
.com files mostly found in the \windows\system32 folder. An
example of a external command would be "MORE.COM" to pause the
output of a command. .com files are limited to 64K memory
mapping. .exe files are more extensive and can also include
header information and icons too. Most executable files today
are .exe files. (See links for more detailed information on
these file types.)
[/quote]
Very good answer Marwin :)
#Post#: 229--------------------------------------------------
Re: Baisc DOS command
By: joycepascua28@gmail.com Date: August 22, 2016, 12:38 am
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[quote author=Andrea Nicole Cura link=topic=6.msg54#msg54
date=1471663594]
Internal commands are memory resident commands. They are
resident in the memory when the COMMAND.COM is loaded in the
boot up process. An example of internal command is CLS, it is
used for clearing the window/environment of cmd.
External commands are MS-DOS utilities / programs. These are the
.EXE or .COM programs located on your hard drive. They are
normally placed under C:\DOS, the default directory. MS-DOS will
load external commands if and only if you instruct to execute
them at the DOS prompt and /or in a batch program. An example of
external command is tree. It graphically displays the directory
structure of a drive or path.
HTML https://cs.senecac.on.ca/~albert.pang/ios100/doscmd.html
[/quote]
Very good Andrea :) Thank you for including the website address
;)
#Post#: 230--------------------------------------------------
Re: Baisc DOS command
By: joycepascua28@gmail.com Date: August 22, 2016, 12:41 am
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[quote author=Anna Liza Bermudez link=topic=6.msg69#msg69
date=1471689732]
In MS-DOS, there are two ways commands are executed: internally
and externally. An internal command is embedded into the
command.com file, and an external command, which is not and
requires a separate file to operate.
Internal commands: cd, dir, cls etc.
External commands: xcopy
[/quote]
Nice answer Anna Liza :) Short but meaningful
#Post#: 231--------------------------------------------------
Re: Baisc DOS command
By: joycepascua28@gmail.com Date: August 22, 2016, 12:44 am
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[quote author=jhellamarie link=topic=6.msg90#msg90
date=1471748171]
INTERNAL COMMANDS these are those commands which are contained
in command.com files of MS-Dos. these are those functions that
are built into the command interpreter.
EXTERNAL COMMANDS these are those commands which are not
in-built in MS-Dos. external commands are those which are not
included in the interpreter.
source:
HTML http://www.answers.com/Q/What_is_the_difference_between_internal_and_external_commands_in_MS-DOS?
[/quote]
Thanks for including the website jhella :) Please give an
example of internal commands and external commands ;)
#Post#: 232--------------------------------------------------
Re: Baisc DOS command
By: joycepascua28@gmail.com Date: August 22, 2016, 12:58 am
---------------------------------------------------------
[quote author=Janina Malacas link=topic=6.msg180#msg180
date=1471787705]
there are some task that are not available in internal command
and in external command
[/quote]
Good Day Janina :) May I correct you? that we cannot use all
internal command as an external command.
#Post#: 233--------------------------------------------------
Re: Baisc DOS command
By: joycepascua28@gmail.com Date: August 22, 2016, 1:01 am
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[quote author=Justin Lynard Sison link=topic=6.msg40#msg40
date=1471615983]
Internal commands are the commands that are executed
directly by the shell. These commands will not have a
separate process running for each.
External commands are the commands that are executed by the
kernal. These commands will have a process id running for
it.
[/quote]
Hi Justin ;) very good meaning. Kindly give at least one
example of Internal and External Command
#Post#: 234--------------------------------------------------
Re: Baisc DOS command
By: joycepascua28@gmail.com Date: August 22, 2016, 1:02 am
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[quote author=judedominguiano link=topic=6.msg65#msg65
date=1471678598]
Internal commands are something which is built into the shell.
For the shell built in commands, the execution speed is really
high. It is because no process needs to be spawned for executing
it. For example, when using the "cd" command, no process is
created. The current directory simply gets changed on executing
it.
External commands are not built into the shell. These are
executables present in a separate file. When an external command
has to be executed, a new process has to be spawned and the
command gets executed. For example, when you execute the "cat"
command, which usually is at /usr/bin, the executable
/usr/bin/cat gets executed.
[/quote]
Very good answer jude ;)
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