MS DOS Muthuselvam

8/3/2019 MS DOS Muthuselvam

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MS-DOS COMMAND

BY:MUTHUSELVAM.C


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MS-DOS basics:

What is MS-DOS?

MS-DOS stands for Microsoft Disk Operating System. MS-DOS controls

the computers hardware and provides an environment for programs to run.This system program must always be present when working with yourcomputer.

Why You Need MS-DOS

There are a variety of reasons why you need MS-DOS. A few of them arelisted below to satisfy your curiosity.

1. Windows is built upon MS-DOS and it is easy and fast to learn programming under MS-DOS as compared to Windows. So, it is good

for beginners

2. MS-DOS controls the flow of information between you and thecomputer (translator).

3. MS-DOS allows you to store information on your computer.

4. MS-DOS allows you to retrieve information stored on your computer.

5. MS-DOS interprets and translates the software you have on yourcomputer.

6. MS-DOS gives you access to all its function (i.e. saving, copying, andprinting files).


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This small introduction gives us an opportunity to try basicMS-DOS commands.

By following the procedures in this unit and the self study file,you will learn to: View the contents of a directory

Change from one directory to another

Create and delete directories

Change from one drive to another

Copy files

Rename files

Delete files

Format a floppy disk

NOTE: Students have to use the DOS self-study file providedalong with this unit for detailed understanding of Commands.


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MS-DOS Timeline

Year DOS Version

12/1979 QDOS

07/1981 86-DOS

09/1982 MS-DOS 1.25

03/1983 MS-DOS 2.0

11/1983 MS-DOS 2.01

12/1983 MS-DOS 2.11

09/1984 MS-DOS 3.0

11/1984 MS-DOS 3.1

04/1986 MS-DOS 3.2


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MS-DOS Timeline

04/1987 MS-DOS 3.304/1988 MS-DOS 3.31

07/1988 MS-DOS 4.0

11/1988 MS-DOS 4.01

04/1989 MS-DOS 4.01a

04/1991 MS-DOS 5.003/1993 MS-DOS 6.0

11/1993 MS-DOS 6.2

04/1994 MS-DOS 6.22


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MS DOS-COMMAND TYPE

Internal Command

External Command


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Brief Description of Internal MS-DOS commands

(Source: MS-DOS 6.22 Fasthelp)

BREAK Sets or clears extended CTRL+C checking.

CALL Calls one batch program from another. CHDIR Displays the name of or changes the current directory. CD

Displays the name of or changes the current directory.

CLS Clears the screen.

COPY Copies one or more files to another location.

DATE Displays or sets the date.

DEL Deletes one or more files.

ERASE Deletes one or more files.

DIR Displays a list of files and subdirectories in a directory.

EXIT Quits the COMMAND.COM program (command interpreter).


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Brief Description of Internal MS-DOS commandscontinues.

MD Creates a directory.

RENAME Renames a file or files. REN Renames a file orfiles.

RMDIR Removes a directory. RD Removes a directory.


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Brief Description of Internal MS-DOS commandscontinues.

TIME Displays or sets the system time.

TYPE Displays the contents of a text file.

VER Displays the MS-DOS version.

VOL Displays a disk volume label and serial number.


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Basic DOS &UNIX commands

DOS Command Unix Command Descriptions

CD cd Change directoryCHKDSK du Disk usageCLS clear Clear the current screenCOPY cp Copying filesDEL rm Removing files or directoriesDIR ls File listing of directoriesMD mkdir Create a directoryMORE more Type out a file with pagingPRINT lpr Print out a file

RD rmdir Remove a directoryRENAME mv Moving files aroundTYPE cat Type out files


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EXTERNAL commands

External commands are MS-DOS utilities /

programs. These are the .EXE or .COM programslocated on your hard drive. They are normallyplaced under C:\DOS, the default directory. MS-DOS will load external commands if and only if youinstruct to execute them at the DOS prompt and /orin a batch program.

1.F DISK - Create a new partition( like C: D).

2.FORMAT- Prepare the disk.( as track and sector).

3.XCOPY - Copy multiple files at the time.

4.ATTRIB - Change the attribution value of files andfolder( like read only and hidden).


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Understanding Operating Systems, Fifth Edition 13

MS-DOS COMMAND ADVANTAGES & DISADVANTAGES

Development purpose

Single-user, stand-alone desktop computers

Advantages

Fundamental operation

Straightforward user commands

Disadvantages

Lack of flexibility

Lack of ability to meet programmer and

experienced user needs


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THANK YOU..

MS DOS Muthuselvam

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