How to get line number count and auto-indent in VIM

It becomes really tough while editing file using vim without knowing which line there is.This tutorial shows this howto in Ubuntu/Feroda.
Edit vimrc file:

sudo gedit /etc/vim/vimrc

or (in Feroda) use:

sudo gedit /etc/vimrc

1.Add this line to the end of file.

set nu

This will get the line number count to appear in the vim screen.
2.To enable auto-indent,you can add following into the file:

set autoindent
set cindent

The second line is specially for C.

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