VI Editor (Visual Editor): -

Q) Why we go for Vi Editor ?

Ans – We cannot edit files in cat command. So for editing files, we go for Vi editor.

Q) How many modes are there in Vi Editor and what are they ?

Ans – There are three modes in Vi Editor. Such as –

1.       Command Mode

2.       Insert Mode

3.       Colon Mode

Q) Which mode is there in vi editor when you are trying to open a file using vi editor ?

Ans – command mode

Q) How you go for insert mode from command mode in vi editor ?

Ans – By pressing key ‘i’ in command mode.

Q) How you come back to command mode from insert mode ?

Ans – By pressing ESC key in insert mode.

Q) How you open a file f1 in vi editor ?

Ans - $ vi filename<Enter – Key>

Q) How you enter text in current cursor position ?

Ans – By pressing key ‘i’ in command mode

Q) How you insert text in beginning of current line ?

Ans – By Pressing Key ‘Capital I’ in command mode

Q) How you insert text after current cursor position ?

Ans – By pressing key ‘a’ in command mode

Q) How you insert text after end of current cursor line ?

Ans – By pressing key ‘Capital A’ in command mode

Q) How you create a new line below current cursor line ?

Ans – By pressing key ‘o’ in command mode

Q) How you create a new line above current cursor line ?

Ans – By pressing key ‘Capital O’ in command mode

Q) How you move cursor to left by one place ?

Ans – By pressing key ‘h’ in command mode

Q) How you move cursor to down by one line ?

Ans – By pressing key ‘j’ in command mode

Q) How you move cursor to right by one place ?

Ans – By pressing key ‘k’ in command mode

Q) How you move cursor to up by one line ?

Ans – By pressing key ‘l’ in command mode

Q) How to bring cursor in 1^st line  ?

Ans – By pressing 1G in command mode

Q) How to bring cursor in nth line ?

Ans – By pressing nG in command mode

Q) How to bring cursor in last line ?

Ans – By pressing G in command line

Q) Which is used in command mode to replace character under cursor ?

Ans – By pressing r or s in command mode

Q) How you delete a single character under cursor ?

Ans – By pressing x in command mode

Q) How to delete characters till the beginning of next word ?

Ans – By pressing dw in command mode

Q) How to delete current line ?

Ans – By pressing dd in command line

Q) How you copy one line and paste in desired place in vi editor ?

Ans – By pressing yy in command line. It copy the current line and place the cursor the position where you want to paste and then hit ‘p’.

Q) How you search pattern in forward and backward direction ?

Ans – In command mode, /pattern will search pattern in forward direction.

In command mode, ?pattern will search pattern in backward direction

Q) How you save the content and then exit from vi editor ?

Ans – In command mode :wq will bring you from vi editor and also save the content

Q) How you quit from vi editor without saving ?

Ans – By pressing :q in command mode

Q) How you save the vi editor file content without exiting ?

Ans – By pressing :w in command mode

Q) Suppose you modified the content of a file through vi editor. But you want to exit from vi editor without any modification of file.

Ans – By pressing :q! in command mode.

Q) How you display line numbers in vi editor ?

Ans – By pressing :set nu in command mode

Q) How you replace bad to good in 10^th to 34^th lines of a file f1 through vi editor ?

Ans – By pressing :%10,34s/bad/good/g in command mode

Q) How you replace a word he to she present in 3^rd field through vi editor ?

Ans – By pressing :%s/he/she/3 through vi editor