vi or vim editor

We use editors to create or edit text files. For many of the dgplug’s member it is the de-facto editor for programming.

How to install?

For Fedora:

$ sudo yum install vim

For Ubuntu

$ sudo apt-get install vim

Launch vim

To open vim editor, type

$ vim
_images/vim1.png

To open a file in vim editor, type

$ vim hello.txt

It will open a file ‘hello.txt’ in vim editor. It is in normal mode. If it is a new file, it will be empty. If it is an old file, then it will show some contents.

To write something in the file, Press i from the keyboard then type something in the file.

_images/vim2.png

Now the vi editor is in INSERT mode.

To save the file, first press Esc, then type :w followed by Enter to save changes in the file. By pressing :q, we can close the file. Now, you are back to the terminal prompt. We can use :x to save the contents of the file and close the file.

Let us again open the same file in vim editor, press i, then type random text. Now if you donot want to save, but want to go back to the last saved revision. just type :e! after pressing escape. If you donot want to save anything and also exit then type ‘:q!’.

Movement with in a file

Let us reopen the file and do some basic movements with in the file.

Press h to move 1 char left

Press j to move 1 char down

Press k to move 1 char up

Press l to move 1 char right

To move word by word, press w

To come back word by word, press b

To go back to the beginning of the line, press 0

To go back end of the line, press $

Cut, Copy, Paste

e - To edit some text at the current cursor position

a - To append some text at the current cursor position

r - To replace to with some new character

x - To delete a character

To change a word - cw

To change from the cursor to the end of the line - c$

To change from the cursor to the beginning of the line - c0

To change a whole line : cc

d - Too delete a character

dw - Too delete a word

d$ - Too delete up to end of the line

dd - Too cut/delete a whole line

d0 - To delete at the beginning of the line

x - To cut a line

xw - To cut a word

xx - To cut a whole line

y - To copy

yy - To copy a whole line

p - To paste

To copy 2 lines - 2yy

To delete 2 words - 2dw

To see line number - :set nu

To go to particular line - : <line number>

To turn off line number - :set nu!

Playing with multiple files

To open multiple files

$ vi file1 file2 .... filen

To move around the files

ctrl + F –> Forward one screen

ctrl + B –> Scroll backward

ctrl + D –> Forward half secreen

ctrl + U –> Backward halfscreen

Find and Replace

to search a string: /<searchstring>

Press n to get to the next occurances

To move search in opposite direction - N

To search specific text backward - ?searchtext

:s/oldstring/newstring - will replace the first occurence of the oldstring to the newstring

To replace all occurrences of the oldstring to new string in that line : :s/oldstring/newstring/g

To replace in all lines :1,$s/oldstring/newstring/g

File Splitting in vim

To split the file, type

:split - for horizontal split

:vsplit - for vertical split

Word Completion

In insert mode press Ctrl + p or Ctrl + n to do word completion

Where to go Next

To read more about Vim editor, open the terminal and type

$ vimtutor