Types Of Editors

Editors:

Editors are used for adding, modifying and / or deleting  text.
The types of different editors used are:

1. Windows:
   notepad
2. DOS:
   edit
3. Linux/Unix
   CLI based  : ex , ed , vi or vim, etc.
   GUI based  : Emacs, Gedit, nedit, nano, and pico, etc.

Editors:

• VI editor is a screen-oriented text editor written by Bill Joy in 1976.
• This is the most commonly used editor for editing files in Linux.

VI Editor Mode:
VI editor has three modes of operations.

• Command Mode
• Insert Mode
• Ex Mode (Extended Command Mode)

To go Insert Mode from Command Mode

i	Inserts the text at the current cursor position
l	Inserts the text in beginning of a line
a	Adds the text after the current cursor position
A	Adds the text at the end of a line
o	Inserts the text one line below current cursor position
O	Inserts the text one line above current cursor position

Ex mode:

Command Mode:

e	moves to the end of the word
b	Moves to beginning of the word
$	Moves to the end of the line
^	Moves to the beginning of the line
H	Moves to the first line onscreen
M	moves to the middle of the onscreen
L	Moves to the last line onscreen
dd	Deletes a line
ndd	Deletes ‘n’ lines
yy	Copies a line
nyy	Copies ‘n’ lines
p	Paste below the cursor line
P	Paste above the cursor line
u	Undo (you can undo 1000 times)
Ctrl+r	Redo
gg	go to beginning of the file
G	Moves the cursor to the last line of the file
/<word to find>	Finds a word (press n for next)
n	Find next occurrence of search word
N	Find previous occurrence of search word
.	Repeat last command action

VI Editor:
To create file

[root@webnoidschools ~]# vi  <filename> 

To create  multiple file

[root@webnoidschools ~]# vi m –o <filename1>  <filename2>