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-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
-<html>
-<head>
-<title>Setting up a Unix lpr filter for Ghostscript</title>
-<!-- $Id: Unix-lpr.htm,v 1.13.2.11.2.5 2003/05/17 14:39:00 giles Exp $ -->
-<!-- Originally: unix-lpr.txt -->
-<link rel="stylesheet" type="text/css" href="gs.css" title="Ghostscript Style">
-</head>
-
-<body>
-<!-- [1.0 begin visible header] ============================================ -->
-
-<!-- [1.1 begin headline] ================================================== -->
-
-<h1>Setting up a Unix <tt>lpr</tt> filter for Ghostscript</h1>
-
-<!-- [1.1 end headline] ==================================================== -->
-
-<!-- [1.2 begin table of contents] ========================================= -->
-
-<h2>Table of contents</h2>
-
-<blockquote><ul>
-<li><a href="#Overview">Overview</a>
-<li><a href="#What_it_can_do">What it can do</a>
-<li><a href="#Setting_up">Setting it up</a>
-<ul>
-<li><a href="#Editing_device_list">Editing the device list <b><tt>DEVICES</tt></b></a>
-<ul>
-<li><a href="#Field_bpp">Field 1: bits per pixel</a>
-<li><a href="#Field_colours">Field 2: colours</a>
-<li><a href="#Field_dq">Field 3: dual queues</a>
-<li><a href="#Device_example">Example definition of <b><tt>DEVICES</tt></b></a>
-</ul>
-<li><a href="#Editing_filter_list">Editing the filter list</a>
-<li><a href="#Editing_printer_port">Editing the printer port and type</a>
-<li><a href="#Modifying_printcap_insert">Modifying <b><tt>printcap.insert</tt></b></a>
-<li><a href="#Multiple_queues">Single or dual queues</a>
-</ul>
-<li><a href="#Bugs">Bugs</a>
-<li><a href="#Authors">Authors</a>
-</ul></blockquote>
-
-<!-- [1.2 end table of contents] =========================================== -->
-
-<!-- [1.3 begin hint] ====================================================== -->
-
-<p>For other information, see the <a href="Readme.htm">Ghostscript
-overview</a> and the <a href="Use.htm">usage documentation</a>.
-
-<!-- [1.3 end hint] ======================================================== -->
-
-<hr>
-
-<!-- [1.0 end visible header] ============================================== -->
-
-<!-- [2.0 begin contents] ================================================== -->
-
-<h2><a name="Overview"></a>Overview</h2>
-
-<p>
-"How do I set up Ghostscript to provide PostScript queues in a standard lpr
-environment on Unix systems?" is a Frequently Asked Question amongst
-Ghostscript users. The two shell scripts described by this document are
-designed to make this task a little easier. They are
-
-<blockquote><dl>
-<dt><b><tt>unix-lpr.sh</tt></b>
-<dd>a flexible, multi-option print filter
-
-<dt><b><tt>lprsetup.sh</tt></b>
-<dd>A shell script which sets up soft links and creates a template insert
-for the <b><tt>printcap</tt></b> file
-</dl></blockquote>
-
-<hr>
-
-<h2><a name="What_it_can_do"></a>What it can do</h2>
-
-<p>
-The print filter resides in the Ghostscript installation directory (often
-<b><tt>/usr/local/share/ghostscript</tt></b>, but may be something else at
-your installation), together with a dummy filter directory containing
-various soft links which point to the filter. It offers the following
-features:
-
-<ul>
-<li>Multiple devices supported by a single filter
-<li>Multiple bit-depths for the same device
-<li>Multiple number of colours for the same device
-<li>Direct (single-queue) and indirect (two-queue) setup
-<li>Support for the standard preprocessing filters if you have the
-corresponding (whatever)-to-PostScript translators
-<li>Redirection of diagnostic and programmed output to a logfile in
-the spooling directory
-<li>Maintaining of printer accounting records of the numbers of pages
-printed by each user (compatible with the <b><tt>pac</tt></b> command)
-<li>Straightforward editing for further customisation
-</ul>
-
-<hr>
-
-<h2><a name="Setting_up"></a>Setting it up</h2>
-
-<p>
-The <b><tt>lprsetup.sh</tt></b> script needs to have two lines edited
-before running, to set the printer devices to use and the list of filters
-available. With this information, it
-
-<ul>
-<li>creates a "<b><tt>filt</tt></b>" subdirectory under the
-Ghostscript installation directory
-<li>creates the links in this directory which enable the filter to
-determine the parameters for running Ghostscript
-<li>automatically generates <b><tt>printcap</tt></b> entries which should
-need only a little editing before adding to your system
-<b><tt>printcap</tt></b> file
-</ul>
-
-<h3><a name="Editing_device_list"></a>Editing the device list <tt>DEVICES</tt></h3>
-
-<p>
-At the top of <b><tt>lprsetup.sh</tt></b> is a line of the form
-<b><tt>DEVICES=</tt></b><em>{list}</em>. Replace the example list with
-your own list of devices. Each entry is the name of a device, followed by
-three more optional fields, separated by dots "<b><tt>.</tt></b>".
-
-<h4><a name="Field_bpp"></a>Field 1: bits per pixel</h4>
-
-<p>
-The first field is required only if the printer device understands the <a
-href="Devices.htm#deskjet_parameters"><b><tt>-dBitsPerPixel=</tt></b>
-switch</a>, which applies only to colour devices. For a particular number
-<b><em>N</em></b> of bits per pixel, add the suffix <b><em>.N</em></b> to
-the device name, for instance <b><tt>cdj500.3</tt></b>,
-<b><tt>cdj500.24</tt></b>, etc.
-
-<h4><a name="Field_colours"></a>Field 2: colours</h4>
-
-<p>
-The second field is required only if the printer device understands the
-setting of the <b><tt>Colors</tt></b> device parameter (as in
-<b><tt>-dColors=</tt></b>), which applies only to colour devices (and at
-present is only supported by the <b><tt>bjc</tt></b>* family of drivers).
-For a particular number <b><em>N</em></b> of colours, suffix
-<b><em>.N</em></b> to the device name, such as <b><tt>bjc600.24.3</tt></b>,
-<b><tt>bjc600.8.1</tt></b> etc.
-
-<h4><a name="Field_dq"></a>Field 3: dual queues</h4>
-
-<p>
-The third field is required in order to use two separate queues for the
-device, a "raw" queue and a PostScript queue (see
-"<a href="#Multiple_queues">Single or dual queues</a>" below). If you want
-dual queues, add the suffix <b><tt>.dq</tt></b> ("dual queue") to the name,
-whether or not a <a href="#Field_bpp">bits-per-pixel suffix</a> has already
-been added.
-
-<h4><a name="Device_example"></a>Example definition of
-<tt>DEVICES</tt></h4>
-
-<p>
-Thus the following list supports a <b><tt>cdj550</tt></b> device at three
-different bit depths (24 bpp, 3 bpp and 1 bpp), with a dual queue (that is,
-a separate queue for the raw data); a monochrome <b><tt>deskjet</tt></b>
-device with a single queue; and a <b><tt>djet500</tt></b> device using a
-separate queue:
-
-<blockquote><b><tt>
-DEVICES="cdj550.24.dq&nbsp;cdj550.3.dq&nbsp;cdj550.1.dq&nbsp;deskjet&nbsp;djet500.dq"
-</tt></b></blockquote>
-
-<h3><a name="Editing_filter_list"></a>Editing the filter list</h3>
-
-<p>
-The standard list contains only the generic "<b><tt>if</tt></b>" filter,
-but a commented-out list shows other filters which may be available. If
-you wish to use the support for these filters, you may need to edit the
-<b><tt>bsd-if</tt></b> file to add to the <b><tt>PATH</tt></b> the
-directories where the translators are stored, or to change the names of the
-filters if yours are different. The <b><tt>bsd-if</tt></b> script is
-supplied with an example setup using Transcript (a commercial package from
-Adobe), and PBMPLUS, a freeware package by Jef Poskanzer and others.
-
-<h3><a name="Editing_printer_port"></a>Editing the printer port and
-type</h3>
-
-<p>
-You can set the port and port type (parallel or printer) for an attached
-printer, but for remote printers you'll have to modify the
-<tt>printcap.insert</tt> file yourself.
-
-<h3><a name="Modifying_printcap_insert"></a>Modifying
-<tt>printcap.insert</tt></h3>
-
-<p>
-Running <b><tt>lprsetup.sh</tt></b> generates a file
-<b><tt>printcap.insert</tt></b> which has a template setup for your
-printer queues. It cannot guarantee to do the whole job, and you will
-probably need to consult your system documentation and edit this file
-before you add it to your <b><tt>printcap</tt></b> file. The file has good
-defaults for serial printers, as these often cause problems in getting
-binary data to the printer. However, you may need to change the baud rate,
-or the handshaking method. Only a small change is required in the
-<b><tt>printcap</tt></b> file to use a networked remote printer instead of
-an attached printer, and an example is given in
-<b><tt>printcap.insert</tt></b>.
-
-<h3><a name="Multiple_queues"></a>Single or dual queues</h3>
-
-<p>
-If you wish to provide a PostScript-only queue (for example, so that all
-pages printed go through accounting), and the printer port is local to the
-host machine, a single queue is appropriate -- Ghostscript simply converts
-PostScript into the printer's native data format and sends it to the
-port. But if the printer is on a remote networked machine, or if you need to
-send raw printer data to the printer, you must use two queues. Simply
-specify the <a href="#Field_dq">"<b><tt>.dq</tt></b>" option</a> above.
-
-<hr>
-
-<h2><a name="Bugs"></a>Bugs</h2>
-
-<p>
-You must have write access to the Ghostscript installation directory for
-<b><tt>lprsetup.sh</tt></b> to create the filter directory and soft links.
-
-<p>
-If you have several different values of bits per pixel for the same device,
-you must list all instances of that device as adjacent items in the
-<a href="#Editing_device_list"><b><tt>DEVICES</tt></b></a> device
-list. If you do not, <b><tt>printcap.insert</tt></b> will contain multiple
-entries for the same device, which is not supported.
-
-<hr>
-
-<h2><a name="Authors"></a>Authors</h2>
-
-<p>
-This material was contributed by George Cameron. Yves Arrouye
-&lt;<a href="mailto:yves.arrouye@usa.net">yves.arrouye@usa.net</a>&gt;
-is responsible for the number-of-colours part of the script.
-
-<!-- [2.0 end contents] ==================================================== -->
-
-<!-- [3.0 begin visible trailer] =========================================== -->
-<hr>
-
-<p>
-<small>Copyright &copy; 1996, 1997, 1998 Aladdin Enterprises. All
-rights reserved.</small>
-
-<p>
-This software is provided AS-IS with no warranty, either express or
-implied.
-
-This software is distributed under license and may not be copied,
-modified or distributed except as expressly authorized under the terms
-of the license contained in the file LICENSE in this distribution.
-
-<p>
-<small>Ghostscript version 7.07, 17 May 2003
-
-<!-- [3.0 end visible trailer] ============================================= -->
-
-</body>
-</html>