How do I set line number in VI Editor

Question

I am using the VI editor in Ubuntu and I have maximum usage of VI editor. to see the line number in vi i am using like below:

:set nu 

I want to set it default when I open a file in vi editor, that file text open with line number by default.

is it possible?

Sorry for duplicate's if it but I search it lot first but not found easily also tried :colorscheme now it is showing me unknown

Solution

You could add this to your ~/.vimrc file:

set number

But if you want that to happen only on files with txt extension:

autocmd BufReadPost *.txt set number

or perhaps better, on any file which Vim detects is a text file:

autocmd FileType text set number

Comments

[joeytwiddle]

By the way, you might like to ask Vim-related questions on the Vi and Vim StackExchange site

[Ramesh Chand]

vi ~/.vimrc Error detected while processing /root/.vimrc: line 3: E185: Cannot find color scheme ':default'

[muru]

O.o You don't have to use those settings - the relevant point is that ~/.vimrc is the file to be modified.

[Ramesh Chand]

Thanks @joeytwiddle it works !! just tried by editing # vi ~/.vimrc and enter set number in the file and Save it by :wq!