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          <th colspan="3" align="center">LPRng Reference Manual: 24
          Sep 2004 (For LPRng-3.8.28)</th>
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      <h1 class="SECT1"><a name="USERGROUP">2.4. Daemon User and
      Daemon Group</a></h1>

      <p>The <b class="APPLICATION">lpd</b> server is started at
      system initialization time and initially runs as ROOT
      (Effective <acronym class="ACRONYM">UID</acronym> 0). It
      performs all file and other operations with <span class=
      "emphasis"><i class="EMPHASIS">non-privileged</i></span> user
      <var class="LITERAL">daemon</var> Effective <acronym class=
      "ACRONYM">UID</acronym> and group <var class=
      "LITERAL">daemon</var> Effective GID, and does a <code class=
      "FUNCTION">setuid()</code> to these UID and GID values when
      running programs. The client programs such as <b class=
      "APPLICATION">lpr</b> operate with the effective user IDs of
      the user which started them.</p>

      <p>Most UNIX systems already have user <var class=
      "LITERAL">daemon</var> and group <var class=
      "LITERAL">daemon</var>, or a similar ones. If suitable user
      and group IDs are not present then the appropriate system
      administration tools should be used to create them. The
      configuration <var class="LITERAL">--with-userid=UID</var>
      and <var class="LITERAL">--with-groupid=GID</var> can be used
      to specify the user and group IDs. The user ID must <span
      class="emphasis"><i class="EMPHASIS">not</i></span> have
      login capability.</p>
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