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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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<td width="80%" align="center" valign="bottom">Chapter
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<div class="SECT1">
<h1 class="SECT1"><a name="SERIAL">12.10. Serial
Printer</a></h1>
<p>Options used:</p>
<ul>
<li>
<p><tt class="LITERAL">br=</tt><i class="EMPHASIS">serial
port bit rate</i></p>
</li>
<li>
<p><tt class="LITERAL">rw</tt> FLAG <i class=
"EMPHASIS">device opened RW</i></p>
</li>
<li>
<p><tt class="LITERAL">stty=</tt><i class="EMPHASIS">stty
options for serial port configuration</i></p>
</li>
</ul>
<br>
<br>
<p>The following is a typical printcap for a serial
printer:</p>
<div class="INFORMALEXAMPLE">
<a name="AEN5845"></a>
<pre class="SCREEN">
# Local Serial ASCII printer
lp2
:lp=/dev/ttya
:rw
:cm=Serial printer
:sd=/var/spool/lpd/lp2
:stty=9600 -echo -crmod -raw -oddp -evenp pass8 cbreak ixon
:filter=/usr/local/sbin/lpf
:mx=0
</pre>
</div>
<br>
<br>
<p>Let's examine the new options:</p>
<ol type="1">
<li>
<p>A serial port is usually <i class=
"EMPHASIS">bidirectional</i>, and printers will report
errors back to the host computer. The <tt class=
"LITERAL">rw</tt> flag will cause the printer port to be
opened <tt class="LITERAL">read-write</tt>, and the <b
class="APPLICATION">lpd</b> server will report status
information.</p>
</li>
<li>
<p>The <tt class="LITERAL">stty</tt> option specifies the
<tt class="COMMAND">stty(1)</tt> flags and line speed
needed to configure the serial line (See <a href=
"secserial.htm">Serial Printers</a> for details).</p>
</li>
<li>
<p>The legacy <tt class="LITERAL">br</tt> (bit rate)
option can be used to specify the line speed as well.</p>
</li>
</ol>
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