title: Debian update-rc.d command not found
body: <p>I have seen some of the posts online where it says to navigate to the dir <code>/usr/sbin/</code> and look for the file <code>update-rc.d</code> but I'm still running into the error that the <code>bash: command not found</code>. </p>
  
  <p>I'm trying to run: 
        <code>update-rc.d -f gdm3 defaults</code></p>
  
  <p>I've also tried:  <code>/usr/sbin/update-rc.d -f gdm3 defaults</code></p>
  
  <p>but that is still resulting in the same error.</p>
  
  <p>please advise... thanks</p>