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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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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="SECT1">
<h1 class="SECT1"><a name="SAMPLEPRINTCAP">4.2. Sample
Printcap Entry</a></h1>
<p>As described in the <a href="tutorial.htm#OVERVIEW">Print
Spooling Overview</a>, the information in the <tt class=
"FILENAME">printcap</tt> database is used control printing
operations. While there is no RFC specifying its format or
content, there is a strong <i class="EMPHASIS">de facto</i>
standard for its format. For a complete description of the
<tt class="FILENAME">printcap</tt> database see <a href=
"printcapref.htm">Printcap Database</a>. For a list of all of
the <tt class="FILENAME">printcap</tt> and configuration
options see <a href="optionindex.htm">Index To All The
Configuration and Printcap Options</a>.</p>
<p>Here is a sample printcap suitable for use by the <b
class="APPLICATION">LPRng</b> clients:</p>
<div class="INFORMALEXAMPLE">
<a name="AEN1650"></a>
<pre class="SCREEN">
LPRng use :lp for destination (device and spool queue)
lp:lp=lp@h4.private
lpreal:lp=/dev/lp0
Vintage BSD uses :rp:rm for spooler queue and :lp for device
lp:rp=lp:rm=h4.private
lpdev:lp=/dev/lp0
</pre>
</div>
<br>
<br>
<p>The <tt class="LITERAL">:lp=lp@h4.private</tt> printcap
entry tells the <i class="EMPHASIS">client</i> programs that
jobs for the <b class="APPLICATION">lp</b> printer or print
queue are sent to the <b class="APPLICATION">lp</b> print
queue queue on host <tt class="FILENAME">h4.private</tt>.
This can also be specified using the The <i class=
"EMPHASIS">legacy</i> BSD <tt class="LITERAL">:rp</tt> and
<tt class="LITERAL">:rm</tt>. The <tt class=
"LITERAL">:rp=</tt><i class="EMPHASIS">queue</i> option
specifies the <i class="EMPHASIS">print queue</i> <tt class=
"LITERAL">:rm=</tt><i class="EMPHASIS">host</i> option
specifies the host. When both <tt class="LITERAL">lp</tt> and
<tt class="LITERAL">:rp:rm</tt> are present the <tt class=
"LITERAL">:lp</tt> option has precedence.</p>
<p>On the printserver the following is a sample printcap
entry suitable for the <b class="APPLICATION">lpd</b>
server:</p>
<div class="INFORMALEXAMPLE">
<a name="AEN1671"></a>
<pre class="SCREEN">
lp:
:lp=/dev/lp0
:sd=/var/spool/lpd/%P
:filter=/usr/local/libexec/filters/ifhp
</pre>
</div>
<br>
<br>
<p>The <tt class="LITERAL">:sd=</tt><i class=
"EMPHASIS">directory</i> option (spool queue directory)
specifies the directory where print jobs will be placed. The
<tt class="LITERAL">%P</tt> will be replaced with the name of
the spool queue. The <tt class="LITERAL">:lp</tt> literal is
now the path to the output device the <b class=
"APPLICATION">lpd</b> server will use to print the job. The
<tt class="LITERAL">:filter</tt> literal specifies the filter
program to use to process the job before sending to the
output device.</p>
<p>Here is another example of a printcap entry using the <tt
class="LITERAL">%P</tt> notation:</p>
<div class="INFORMALEXAMPLE">
<a name="AEN1682"></a>
<pre class="SCREEN">
lp:lp=%P@h4.private
</pre>
</div>
This entry will cause all jobs sent to the <tt class=
"LITERAL">lp</tt> spool queue to be sent to the <tt class=
"LITERAL">lp</tt> queue on <tt class="LITERAL">server</tt>.
<tt class="LITERAL">%X</tt> strings in the printcap entries
are expanded as shown:
<div class="INFORMALTABLE">
<a name="AEN1688"></a>
<table border="1" class="CALSTABLE">
<thead>
<tr>
<th align="LEFT" valign="TOP">Key</th>
<th align="LEFT" valign="TOP">Replaced By</th>
</tr>
</thead>
<tbody>
<tr>
<td align="LEFT" valign="TOP"><tt class=
"LITERAL">%P</tt></td>
<td align="LEFT" valign="TOP">printcap entry primary
name (printer)</td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><tt class=
"LITERAL">%Q</tt></td>
<td align="LEFT" valign="TOP">queue requested</td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><tt class=
"LITERAL">%h</tt></td>
<td align="LEFT" valign="TOP">short host name
(host)</td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><tt class=
"LITERAL">%H</tt></td>
<td align="LEFT" valign="TOP">fully qualified host
name (host.dns.whatever)</td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><tt class=
"LITERAL">%R</tt></td>
<td align="LEFT" valign="TOP">remote printer (rp
value)</td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><tt class=
"LITERAL">%M</tt></td>
<td align="LEFT" valign="TOP">remote host (rm
value)</td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><tt class=
"LITERAL">%D</tt></td>
<td align="LEFT" valign="TOP">date in YYYY-MM-DD
format</td>
</tr>
</tbody>
</table>
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