/etc/vim/vimrc
set showmatch "bracket match
set matchtime=5 "bracket match time 5
set ignorecase "ingnore upper and lower when seek
set incsearch
set formatoptions=tcrqn
set smartindent "auto indent for c
set tabstop=4 "set tab as 4
set cindent "use c indent
set softtabstop=4
set shiftwidth=4
set nonu
原文：http://www.cnblogs.com/shanguanghui/p/4102993.html