1. your can modify the vim global config for all user or modify the local config for single user.
  2. the global config path is /etc/vim, you can touch a new file named vimrc.local 
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    " Sets how many lines of history VIM has to remember
set history=1000

" Ignore case when searching
set ignorecase

" When searching try to be smart about cases
set smartcase

" Highlight search results
set hlsearch

" Makes search act like search in modern browsers
set incsearch

" show line number
set number

" show command in status line
set showcmd

" show matching brackets
set showmatch

" show cusor line
set cursorline

" Always show current position
set ruler

" Enable syntax highlighting
syntax enable

" Set utf8 as standard encoding and en_US as the standard language
set encoding=utf8

" auto
set autoindent

"
" set noexpandtab

" Use spaces instead of tabs
set expandtab

" Be smart when using tabs ;)
set smarttab

" tab use 4
set tabstop=4

" use 4 space replace tab
set softtabstop=4

"
set shiftwidth=4

" Always show the status line
" set laststatus=2

" use mouse
" set mouse=a