Vi editor

VI EDITER COMMANDS

Vi editer:

        Vi editor is used to create new files. (or) To modify already existing files.

           It is classified into 3 models

                   1)command mode.

                   2)Input (or) Insert mode.

                   3)Ex command mode.

::The default mode is command mode.

 How to shift command mode to Insert mode:

1)A :: It places at end of the current line.

2)a :: It places at right of the cussor position.

3)I :: It places at begining of the cussor line.

4)i :: It places at left of the cussor position.

5)O ::Insert new line above this the cussor position.

6)o :: Insert new line bellow this the cussor position.

7)esc ::Is the key to shift from insert mode to command mode.

8): ::Is the command to shift from command mode to  Ex command mode.

Command mode commands:

1)

2)  w(mw) ::next word starting

     e(ne)::word ending

     b(nb)::word beginning

3) $ ::places cussor at end of the current line.

    ^ :: places cussor at begining of the current line.

4) # :: places cussor at begining of the page.

5) M :: places cussor at middle of the page.

6) L :: places cussor at end of the page.

7) ctrl f ::forward one page(pg dn key).

    ctrl b ::backword one page(pg up key).

8) x(nx) ::To delete current(del key).

9) X ::It delets previous char(back space).

10) dw(adw)::to delete a word.

11) dd(ndd)::to delete a line.

12)d$ ::It deletes current position of the line.

13)d$ ::It deletes current begining of the line.

14) yw(nyw) :: to copy the word.

15) yy(xyy) :: to copy a line.

16) y$ :: It copies current position to end of the line.

17) y^ :: It copies current position to beginning of the line.

18) P :: paste

19) U ::undo

20) CC :: to clear a line

21) J :: to join a line

22) ZZ :: Save&Quit

Ex commands mode commands:

1)      :w :: save & without quit

2)      :w file name ::save with given file.

3)      :q! ::Quit with out sae

4)      :wq ::save & quit

5)      :1 ::it places cussor at first line of the file.

6)      :$ ::it places cussor at last line of the file.

7)      :setnu ::set line number.

8)      :setnonu ::remove line no.

9)      :!<unix comm.> ::it exutes unix command.

10)  :|string| ::Top to bottom.

11)  :|string? :: bottom to top.

12)  :start line,end line ::s|old string|new string|gi (search & replace).

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