title: How to check the size of a directory and print it in bash?
body: <p>How can I check the size of a specific directory in Linux(CentOS) and print it out?</p>
  
  <p>I know I can use <code>lvs</code> and <code>df</code>(<code>df -f "path to dir"</code>) but how can I get just a number like 78Gbs instead of the whole thing(avail, used, etc)</p>