title: Bash script, combining directory size for all users in the system
body: <p>Okay, so basically right now I have a directory which is meant to collect files. </p>
  
  <p>However, I need to find the total usage of the directory for all users in the system and it should be in bytes. </p>
  
  <p>I am stuck on this for a long time and I would appreciate it if someone can help me a bit.</p>