lprng-doc 3.8.A~rc2-3 / usr / share / doc / lprng-doc / LPRng-Reference-Multipart / jobremoval.htm

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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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  <div class="SECT1">
    <h1 class="SECT1"><a name="JOBREMOVAL" id="JOBREMOVAL">4.8. Job
    Removal</a></h1>

    <p>Occasionally we print a file and then change our mind and
    want to cancel the job. The <b class="APPLICATION">lprm</b>
    command allows us to do this.</p>

    <div class="INFORMALEXAMPLE">
      <a name="AEN2139" id="AEN2139"></a>
      <pre class="SCREEN">
<samp class="PROMPT">h4: {154} % </samp><kbd class=
"USERINPUT">lpq</kbd>
Printer: lp@h4  (printing disabled)
 Queue: 3 printable jobs
 Server: no server active
 Status: job 'papowell@h4+17922' removed at 18:15:13.981
 Rank   Owner/ID          Class Job Files      Size Time
1      papowell@h4+17959    A 17959 (stdin)       3 18:23:24
2      papowell@h4+17962    A 17962 (stdin)       6 18:23:30
3      papowell@h4+17970    A 17970 (stdin)       5 18:23:35
<samp class="PROMPT">h4: {155} % </samp><kbd class=
"USERINPUT">lprm</kbd>
Printer lp@h4:
  checking perms 'papowell@h4+17959'
  dequeued 'papowell@h4+17959'
<samp class="PROMPT">h4: {156} % </samp><kbd class=
"USERINPUT">lpq</kbd>
Printer: lp@h4  (printing disabled)
 Queue: 2 printable jobs
 Server: no server active
 Status: job 'papowell@h4+17922' removed at 18:15:13.981
 Rank   Owner/ID          Class Job Files      Size Time
1      papowell@h4+17962    A 17962 (stdin)       6 18:23:30
2      papowell@h4+17970    A 17970 (stdin)       5 18:23:35
<samp class="PROMPT">h4: {157} % </samp><kbd class=
"USERINPUT">lprm 17970</kbd>
Printer lp@h4:
  checking perms 'papowell@h4+17970'
  dequeued 'papowell@h4+17970'
<samp class="PROMPT">h4: {158} % </samp><kbd class=
"USERINPUT">lpq</kbd>
Printer: lp@h4  (printing disabled)
 Queue: 1 printable job
 Server: no server active
 Status: job 'papowell@h4+17922' removed at 18:15:13.981
 Rank   Owner/ID          Class Job Files     Size Time
1      papowell@h4+17962    A 17962 (stdin)      6 18:23:30
</pre>
    </div>

    <p>By default, the <b class="APPLICATION">lprm</b> command
    removes the first job in the queue that the user has permission
    to remove. Also, as shown in the example, you can remove a job
    by specifying the job ID or the job number. If you specify a
    user name, you remove <tt class="LITERAL">all</tt> of the
    user's jobs. This can be dangerous:</p>

    <div class="INFORMALEXAMPLE">
      <a name="AEN2154" id="AEN2154"></a>
      <pre class="SCREEN">
<samp class="PROMPT">h4: {159} % </samp><kbd class=
"USERINPUT">lpq</kbd>
Printer: lp@h4  (printing disabled)
 Queue: 3 printable jobs
 Server: no server active
 Status: job 'papowell@h4+17922' removed at 18:15:13.981
 Rank   Owner/ID          Class Job Files     Size Time
1      papowell@h4+17962    A 17962 (stdin)      6 18:23:30
2      papowell@h4+18499    A 18499 /tmp/hi      3 18:56:00
3      papowell@h4+18501    A 18501 /tmp/there   6 18:56:02
<samp class="PROMPT">h4: {160} % </samp><kbd class=
"USERINPUT">lprm papowell</kbd>
Printer lp@h4:
  checking perms 'papowell@h4+17962'
  dequeued 'papowell@h4+17962'
  checking perms 'papowell@h4+18499'
  dequeued 'papowell@h4+18499'
  checking perms 'papowell@h4+18501'
  dequeued 'papowell@h4+18501'
<samp class="PROMPT">h4: {161} % </samp><kbd class=
"USERINPUT">lpq</kbd>
Printer: lp@h4  (printing disabled)
 Queue: no printable jobs in queue
 Status: job 'papowell@h4+17922' removed at 18:15:13.981
</pre>
    </div>

    <p>The special user <tt class="LITERAL">all</tt> matches all
    jobs in a print queue. Clearly you should be careful not to
    specify <tt class="COMMAND">lprm all</tt> by accident. Even
    more dangerous is the following command:</p>

    <div class="INFORMALEXAMPLE">
      <a name="AEN2165" id="AEN2165"></a>
      <pre class="SCREEN">
<samp class="PROMPT">h4: {162} % </samp><kbd class=
"USERINPUT">lprm -a all</kbd>
</pre>
    </div>

    <p>As you might surmise, this removes <tt class=
    "LITERAL">all</tt> print jobs in <tt class="LITERAL">all</tt>
    queues, which is an excellent way to purge print queues of all
    jobs.</p>
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