title: What are the well-known UIDs?
body: <p>According to the <code>useradd</code> manpage, UIDs below 1000 are typically reserved for system accounts.</p>
  
  <p>I'm developing a service that will run as its own user. I know that well-known ports can be found in <code>/etc/services</code>.</p>
  
  <p>Is there a place where I can find out what well-known UIDs are out there? I would like to avoid crashing with someone else's UID. </p>