Save use sudo

.vim/startup/map_vimrc

@@ -52,6 +52,10 @@ vnoremap <A-k> :m '<-2<CR>gv=gv
 " 空格关闭高亮，清空所有已经显示
 nnoremap <Space> :set hlsearch! hlsearch?<CR>
 
+" sudo write
+" https://catonmat.net/sudo-vim
+cnoremap sudow w !sudo tee % >/dev/null
+
 set hidden  " 避免必须保存修改才可以跳转 buffer
 " buffer 
 "nmap <leader>n :bnext<CR>