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Basics of Vi editor

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What is vi editor?

Vi means Visual Editor.It is used to edit the unix files
There are many ways to edit files in Unix and Vi is one of the best ways is using screen-oriented text editor vi.
This editor enable you to edit lines in context with other lines in the file.

Now a days people using advanced version of Vi called VIM.

How to start vi editor
You can use the following commands and use the vi editor.

vi filename

It Creates a new file if it already does not exist, otherwise opens existing file.

vi -R filename

Opens an existing file in read only mode.

view filename

Opens an existing file in read only mode.

Example for Creating Vi

$vi sample

Then you can see the following screen as a result.From there you can edit your codes.

~
~
~
~
~
~
~
~
~
~
~
"sample" [New File] 

How to quit the vi

Using the following command you can come out of the vi

:q

This command will used to come out of vi without saving the content.

How to save the content in vi

:w

Above command will used to save the vi content.

Also,You can use :wq.This will use to save and quit immediately.

Some of the commands which will use inside the file while typing like move up,down,left,right

k ->Moves the cursor up one line.
j ->Moves the cursor down one line.
h ->Moves the cursor to the left one character position.
l ->Moves the cursor to the right one character position.

Copy and paste commands

yy ->Copies the current line.
yw->Copies the current word from the character the lowercase w cursor is on until the end of the word.
p ->Puts the copied text after the cursor.
P ->Puts the yanked text before the cursor.

For More -> Visit this link http://www.tutorialspoint.com/unix/unix-vi-editor.htm

posted Sep 3, 2014 by Manish Tiwari

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enter image description here

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More Reference click here -> http://mintaka.sdsu.edu/reu/nano.html

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