MS-DOS

                                  MS- DOS(Microsoft Disk Operating System)

Microsoft released DOS in 1981, and 1st version was numbered 1.00 then 1.1,1.25, 2.0so on and then 6.2. It is most common operating system.

Command: A set of word by which we must tell the computer what you want to do, called command.

File Name:  File name is a identification of a file. A  File name has two parts, Name and Extension. A file name contain up to 8 character  long and extension up to 3 characters Extension is used to quickly identify a file and it is optional .

                                 Basic Command

Command                                                   Purpose 

Date                        :    To set or change the date of machine clock.

Time                       :    To set or change the Time of machine clock.

CLS                        :    To Clear the Screen

VER                       :    Its is used to display version of  Operating system .

COPY CON          :   It is use to create a file.

                                 Syntax: c:> copy con filename

Type                       :  To See the contains of any file.

                                Syntax: c:> Type filename.  

 Exit                       : It is used to exit from DOS.

DIR                        : To see the disk directories and files.

                               Syntax: c:> dir

DIR                        : Will display all directories and files.

DIR/P                    : Will display all files & directories page wise.

DIR/ON/P            : Will display all the files order with name and page wise . (Ascending )

DIR/O-N/P           : Will display all the files order with name and page wise.(Descending)

DIR/OD/p            : Will display all the files order with date and page wise.(Ascending).

DIR/AD                : Will display only directories .

DIR/S                    : Will Display directories with sub-directories.

DIR/AH                : Will display only hidden files.

DIR/AR                : Will display only read-only files.

DIR *.*                 : Will display all files.

DIR*.txt               : Will display all files with extension txt.

DIR T*.T*           : Will display all files which file name 1st character & extension 1st                                                                                              character is T&T

                        File handling Commands

EDIT                    : To modify a file contents.

                                Syntax: c:>Edit Filename

REN                     : To change the name of any file or directory.

                                Syntax: c:> Ren Old Filename New Filename.

COPY                  : It is use copy a file. 

Move                    : It is move a file in other place

                              Syntax: c:> Move source Filename Target directory

DEL                     : To erase file from disk.

                               Syntax: c:> del Filename

                   Directory/Folder handling Commands

MD                        : To make a Directory.

CD                         : Change Directory, to enter in to sub-directory

CD..                       : Exit from a sub-directory

CD                        : To Reach root directory from any other directory.

RD                          : To Remove Directory