Saturday, 10 January 2015

DOS (Disk Operating System)

       MS-DOS


    What is MS-DOS ?
                   MS-DOS, the acronym for Microsoft Disk Operating       
       System, is an operating system with a command-line interface 
       used on personal computers. As with other operating systems 
       such as OS/2, it translates keyboard input by the user into 
       operations the computer can perform, it also oversees     
       operations such as disk input and output, video support, 
        keyboard control, and many internal functions related to 
        program execution and file maintenance.


     Notes

  • To open a command prompt, click Start, point to All Programs, point to Accessories, and then click Command Prompt.
  • Creating a program information file (PIF) for an MS-DOS-based program creates a shortcut to the program executable. All the settings saved in the PIF file are contained in the shortcut. 


MS DOS Screen




      1. File name conversion: - Any file contains a name that is divided into two parts                                               and separate with single dot.
        
         (1)Primary Name: - It contains maximum 8 characters.
         (2)Extension Name: - It can have maximum 3 characters . Ex-Ram , xyz ,etc.

       File Name can have the following character:-
                     (1)    An alphabet  (A to Z)  
                     (2)   Numeric  (0 to 9)            
                      (3)   Other character (% , $ , @ , etc.)






   
                         There are two commands in Ms-Dos.
                
                      1)   INTERNAL COMMAND
                      
                      2)   EXTERNAL COMMAND


 1) Internal command :-  These  commands are also called memory resident command these commands are automatically loaded into  the booting process . There are actually includes in command. Internal command are DIR, MD, DATE, VER, VOL, CD, COPY CON, TYPE,  XCOPY, CLS, DEL, REN, PATH.

             Uses of commands:-

      (1)    Date: - These commands are used to see the current system date or to change the 
                           current system date.   
                                              Syntax : - Date
          
             (2)   Version: - Display the  windows version. 
                                                     Syntax : - Ver

        (3)   Time: - These commands are used to check or change the current system time.
                                                    Syntax : -Time

        (4)  Volume: - It is used to see volume label of any disk and serial number.
                                                Syntax :-Vol

         (5)   Make Directory: - It is used to create new directory.
                                                 Syntax: -Md_directory name

         (6)  Change Directory(inside): - It is used to go inside of any directory.
                                                          Syntax : - Cd_Directory name  

         (7)   Change Directory(outside): - It is used to go outside of any directory .
                                                          Syntax : - Cd..

         (8)  Remove Directory: - It is used to delete directory but directory should be empty.
                                                           Syntax: - Rd_Directory name

         (9)  Clear screen :- It is used to clear the screen. 
                                                                 Syntax: - Cls

         (10)    Dir (Display Directory): -This command is used to display the list of files   
                                                                    and  directories.
                                                              Syntax: -Dir




2)  External Command:- These command are called disk resident command. These commands distinction in hard disk and floppy disk. Example :- Xcopy, Label, Mem, Edit, More, Exit, etc.

Use of commands:-
1)      Xcopy :- This command is used to copy any directory along with all file and directory
                       to another directory.
                                     Syntax:-Xcopy_Source Directory_Target directory

2)      Label :- These command allows to change label of any disk.
                                        Syntax:- Label_Drive name

3)      Move :- This command can move one directory to another directory.
                                     Syntax:- Move_Source directory_Target directory

4)     Memory: - This command is used to display total and available memory.
                                      Syntax:-Mem/p (Present Memory)

5)      Edit:- This command is used to Edit a file.
                                      Syntax:-Edit_File name

6)     More:- This file is used to see the contact of any long file without opening it.
                                      Syntax:- More_File name

7)      Copy  Con :- It is used to create a new file.
                                   Syntax:-Copy Con_File name
                                  Write   your   text them to save this text Press F6  or CTRL+Z

     8)     Type: - It is used to see the Content of any text file.
                                           Syntax:-Type_File name

9)     Del:- This command is used to delete any file.
                                     Syntax:-Del_file name

10)  Ren:- It is used to rename any file.
                                       Syntax:-Ren_File name

11)   Prompt: - It is used to customize drive name Prompt.
                                      Syntax :-Prompt_name

12)   Print :- This command is used to print any file.
                                       Syntax: - Print_file name

13)   Tree :- this command display a visual tree of the directory structure your disk.
                                      Syntax :- Tree_drive name   

14)  Exit: - This command is used to exit from dos.
                                        Syntax: - Exit

15)   Fc (file comparison) :- This command is used to make comparison between two file.
                                          Syntax :- FC_1st file_2nd file

16)  ATTRIB :- We can used this command to hide or unhide or to make only file read only.
i)      Read only file (R)    (+R) only read file
ii)    Archive File (A)        (-R)  edit file
iii)  Hidden file (H)         (-H) Hide file
iv)  System File  (S)         (-H) Hide not file

                                      Syntax :- attrib_(+R) (+A) (+H) (-H)_file name

17)   Format :- This command is used to format a new floppy disk for making tracks or    
                        sector on The disk in order to copy a file.
                              Syntax :-Format_Drive name

18)  Sort :- This command is used to arrange all name or line of any file in 
                        alphabetically Ascending (A to Z) or descending (Z to A)
                                Syntax :- Sort_File name_more (A to Z)
                                                Sort_File name_ Rimore (Z to A)

19)  Find :- This command is used search letter or words in a particular file
                                Syntax :- Find _”word of find”_file name

     20) CHKDSK (Check disk) :-This command is used to check the disk status like 
                                                 total space of disk Number of fileof file disk space used  
                                                  and vacant.
                                        Syntax :- chkdsk_ Drive name.

21)   Help :- Anything and everything about any dos command you can find with the 
                           help of help command. 
                                                   Syntax :- help
               
                      
             Uses Of Switches: -

          1)   Dir/p: - this switch allow us to see once screen full of files, at a time.
                                         Syntax: -Dir/p

         2)   Dir/w: - Rather them size time and data information this switch display five   
                                     columns of file name . 
                                             Syntax: - Dir/w

         3)   Dir/S/P: - List all the files directory and all the sub Directories.
                                            Syntax: - Dir/S/P

         4)  Dir/P/B: - Display only file and directory doesn’t display the volume label  
                                      serial number and  current directory. 
                                              Syntax: - Dir/P/B

         5)  Dir/L: - It display all the information in lower case latter (small latter).
                                             Syntax: - Dir/L

         6)   Dir/AD: - Display the directory name. 
                                                  Syntax: - Dir/AD
                                              
          7)   Dir/A_D: - Display not the directory name. 
                                                   Syntax: - Dir/A_D
                                 
          8)  Dir/AS: - display system file. 
                                                    Syntax: - Dir/AS

         9)  Dir/ON: - Sort in alphabetical order by name. 
                                                     Syntax: - Dir/ON
                              
          10)  Dir/O_N: - Sort in reverse alphabetical order by name. 
                                                     Syntax: - Dir/O_N
                             
          11) Dir/OE: - Sort in alphabetical by extinction. Ex- OVO, BAT, etc. 
                                                      Syntax: - Dir/OE
                             
          12) Dir/O_E: - Sort in reverse alphabetical order  by extinction.
                                                        Syntax: - Dir/O_E

          13) Dir/Od: - Sort by data and time oldest first. 
                                               Syntax: - Dir/OD
            
          14) Dir/O_D: - sort by data and time news first. 
                                                Syntax: - Dir/O_D

          15) Dir/OS: - Sort by file smaller first.   
                                                Syntax: - Dir/O

          16) Dir/O_S: - Sort by file largest first. 
                                                  Syntax: - Dir/O_S

          17) Dir/OG: - list the directories before file .   
                                                    Syntax: - Dir/OG

          18) Dir/O_G: - List the files before directory. 
                                                      Syntax: - Dir/O-G

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Full Form....Computer Related Words

 Full Form

  • PC          :- Personal computer
  • CRT        :- Cathode Ray tube
  • Fsm        :- Flate screen monitor
  • lcd        :- liquid cristal display
  • bcr        :- bar code reader
  • os           :- operating system
  • lan        :- local area network
  • wan       :- wide area network
  • www      :- world wide web
  •  cr           :- control register
  • iar          :- instruction address register
  • sor          :- store operate register
  • upc          :- universal project code
  • Fbp          :- flats bud plotter
  • Dp             :- dram plotter
  • Voir         :- voice over internet register
  • Wap         :- wireless application protocol
  • Dbms       :-data base management system
  • Dbf          :- data base file
  • Html       :-hyper text markup language
  • Bmp         :- bit map file
  • Gui           :- graphic user internet
  • Ncr          :- national case register
  • Tmc          :- tabulating machine compound
  • Dac          :- display adopter card
  • Tsr           :- the apace review
  • Bios         :- basic input output answer
  • Virus      :- vital information resource under system
  • JPeg        :- joint photographic experts group
  • Hdd          :- hard disk drive
  • FDD          :- Floppy disk drive

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