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<th colspan="3" align="center">LPRng-HOWTO: 1 Apr 2002
(For LPRng-3.8.10)</th>
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<div class="CHAPTER">
<h1><a name="LPC">Chapter 9. <b class="APPLICATION">lpc</b> -
Administration Program</a></h1>
<div class="TOC">
<dl>
<dt><b>Table of Contents</b></dt>
<dt>9.1. <a href="lpc.htm#AEN4700">Informational Commands
- status, flush, active, reread</a></dt>
<dt>9.2. <a href="x4718.htm">Queue Management - enable,
disable, up, down</a></dt>
<dt>9.3. <a href="x4730.htm">Printing Management - start,
stop, up, down</a></dt>
<dt>9.4. <a href="x4739.htm">Problem Management - abort,
redo, kill</a></dt>
<dt>9.5. <a href="x4745.htm">Job Scheduling - topq,
holdall, noholdall, hold, release</a></dt>
<dt>9.6. <a href="lpcredirect.htm">Queue Management -
class, redirect, move</a></dt>
</dl>
</div>
<p>The <b class="APPLICATION">lpc</b> command is the main way
that the <b class="APPLICATION">lpd</b> server is controlled.
Here is the help information displayed by the command:</p>
<div class="INFORMALEXAMPLE">
<a name="AEN4681"></a>
<pre class="SCREEN">
<tt class="PROMPT">h4: {308} %</tt> <tt class=
"USERINPUT"><b>lpc -=</b></tt>
lpc: Illegal option '='
usage: lpc [-Ddebuglevel][-Pprinter][-Shost][-Uusername][-V] [command]
with no command, reads from stdin
-Ddebuglevel - debug level
-Pprinter - printer or printer@host
-Shost - connect to lpd server on host
-Uuser - identify command as coming from user
-V - increase information verbosity
commands:
active (printer[@host]) - check for active server
abort (printer[@host] | all) - stop server
class printer[@host] (class | off) - show/set class printing
disable (printer[@host] | all) - disable queueing
debug (printer[@host] | all) debugparms - set debug level for printer
down (printer[@host] | all) - disable printing and queueing
enable (printer[@host] | all) - enable queueing
hold (printer[@host] | all) (name[@host] | job | all)* - hold job
holdall (printer[@host] | all) - hold all jobs on
kill (printer[@host] | all) - stop and restart server
lpd (printer[@host]) - get LPD PID
lpq (printer[@host] | all) (name[@host] | job | all)* - run <b
class="APPLICATION">lpq</b>
lprm (printer[@host] | all) (name[@host]|host|job| all)* - run <b
class="APPLICATION">lprm</b>
msg printer message text- set status message
move printer (user|jobid)* target - move jobs to new queue
noholdall (printer[@host] | all)- hold all jobs off
printcap(printer[@host] | all) - report printcap values
quit - exit LPC
redirect(printer[@host] | all) (printer@host | off )* - redirect jobs
redo (printer[@host] | all) (name[@host] | job | all)* - redo jobs
release (printer[@host] | all) (name[@host] | job | all)* - release jobs
reread (printer[@host]) - LPD reread database information
start (printer[@host] | all) - start printing
status (printer[@host] | all) - status of printers
stop (printer[@host] | all) - stop printing
topq (printer[@host] | all) (name[@host] | job | all)* - reorder job
up (printer[@host] | all) - enable printing and queueing
diagnostic:
defaultq - show default queue for LPD server
defaults - show default configuration values
client (printer | all) - client config and printcap information
server (printer | all) - server config and printcap
</pre>
</div>
<br>
<br>
<p>Most of the <b class="APPLICATION">lpc</b> command line
options are common to all <a href="lprngclients.htm"><b
class="APPLICATION">LPRng</b> Clients</a>, with the exception
of the <tt class="LITERAL">-S server</tt> literal. This
option allows the <b class="APPLICATION">lpd</b> host to be
explicitly specified.</p>
<p>The <b class="APPLICATION">lpc</b> commands can be
classified as <i class="EMPHASIS">informational</i>, <i
class="EMPHASIS">queue management</i>, <i class=
"EMPHASIS">problem management</i>, <i class="EMPHASIS">job
scheduling</i>, and <i class="EMPHASIS">diagnostic</i>.</p>
<div class="SECT1">
<h1 class="SECT1"><a name="AEN4700">9.1. Informational
Commands - status, flush, active, reread</a></h1>
<p>The <tt class="COMMAND">lpc status</tt> command displays
the current status of various activities of interest to the
system administrator. This information includes the process
ID of the server and other processes.</p>
<p>During normal operation, when requested for job status
information the <b class="APPLICATION">lpd</b> server will
create this information and then save it in a status cache.
When successive requests for the same information arrive,
the cache is checked to see if the information is already
in the cache and there have been no status changes. If this
is the case, the cached status information is used. The <tt
class="COMMAND">lpc flush</tt> command will flush (delete)
this cache information and cause the <b class=
"APPLICATION">lpd</b> server to regenerate it from the
original job files.</p>
<p>The <tt class="COMMAND">lpc active</tt> command connects
to the print server and gets the Process ID of the <b
class="APPLICATION">lpd</b> process. This is useful to
determine if the <b class="APPLICATION">lpd</b> server is
running on the print server.</p>
<p>The <tt class="COMMAND">reread</tt> command connects to
the <b class="APPLICATION">lpd</b> print server and
requests that the server reread the <tt class=
"FILENAME">printcap</tt>, <tt class=
"FILENAME">lpd.conf</tt>, and <tt class=
"FILENAME">lpd.perms</tt> database files.</p>
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