Line numbers in all emacs buffers

Question

I want to make that would in all the buffers which I had opened were line numbers in GNU/Emacs. In my .emacs i try to add:

(linum-mode t)

but it's not helped me.

Thank you

Answer 1

Try with that in your .emacs:

(require 'linum)
(global-linum-mode)

Answer 2

You can also customize the line number format, using printf style formatting.

eg. %5d for 5 char padding.

M-x customize-group RET linum RET for all the options.