title: Linux ls shows files with yellow background color
body: <p>what does this yellow (orange on Ubuntu) background color mean in ls?</p>
  
  <p><a href="https://i.stack.imgur.com/3mLWG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3mLWG.png" alt="enter image description here"></a></p>
  
  <pre><code>neoexpert@sonderbyte:/srv/thing$ ls -l
  total 32
  drwxrwsr-x 2 root developers 4096 Aug 25 12:30 branches
  -rw-rw-r-- 1 root developers   66 Aug 25 12:30 config
  -rw-rw-r-- 1 root developers   73 Aug 25 12:30 description
  -rw-rw-r-- 1 root developers   23 Aug 25 12:30 HEAD
  drwxrwsr-x 2 root developers 4096 Aug 25 14:00 hooks
  drwxrwsr-x 2 root developers 4096 Aug 25 12:30 info
  drwxrwsr-x 4 root developers 4096 Aug 25 12:30 objects
  drwxrwsr-x 4 root developers 4096 Aug 25 12:30 refs
  neoexpert@sonderbyte:/srv/thing$ 
  </code></pre>