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<!DOCTYPE HTML>
<html>
<!-- SECTION: Man Pages -->
<head>
<link rel="stylesheet" type="text/css" href="../cups-printable.css">
<title>cupsd-helper(8)</title>
</head>
<body>
<h1 class="title">cupsd-helper(8)</h1>
<h2 class="title"><a name="NAME">Name</a></h2>
cupsd-helper - cupsd helper programs
<h2 class="title"><a name="SYNOPSIS">Synopsis</a></h2>
<b>cups-deviced</b>
<i>request-id</i>
<i>limit</i>
<i>user-id</i>
<i>options</i>
<br>
<b>cups-driverd</b>
<b>cat</b>
<i>ppd-name</i>
<br>
<b>cups-driverd</b>
<b>list</b>
<i>request_id</i>
<i>limit</i>
<i>options</i>
<br>
<b>cups-exec</b>
<i>sandbox-profile</i>
[
<i>-g</i>
<i>group-id</i>
] [
<i>-n</i>
<i>nice-value</i>
] [
<i>-u</i>
<i>user-id</i>
]
<i>/path/to/program</i>
<i>argv0</i>
<i>...</i>
<i>argvN</i>
<h2 class="title"><a name="DESCRIPTION">Description</a></h2>
The <b>cupsd-helper</b> programs perform long-running operations on behalf of the scheduler,
<a href="man-cupsd.html?TOPIC=Man+Pages"><b>cupsd</b>(8).</a>
The <b>cups-deviced</b> helper program runs each CUPS
<a href="man-backend.html?TOPIC=Man+Pages"><b>backend</b>(7)</a>
with no arguments in order to discover the available printers.
<p>The <b>cups-driverd</b> helper program lists all available printer drivers, a subset of "matching" printer drivers, or a copy of a specific driver PPD file.
<p>The <b>cups-exec</b> helper program runs backends, filters, and other programs. On macOS these programs are run in a secure sandbox.
<h2 class="title"><a name="FILES">Files</a></h2>
The <b>cups-driverd</b> program looks for PPD and driver information files in the following directories:
<pre class="man">
<i>/Library/Printers</i>
<i>/opt/share/ppd</i>
<i>/System/Library/Printers</i>
<i>/usr/local/share/ppd</i>
<i>/usr/share/cups/drv</i>
<i>/usr/share/cups/model</i>
<i>/usr/share/ppd</i>
</pre>
<p>PPD files can be compressed using the
<b>gzip</b>(1)
program or placed in compressed
<b>tar</b>(1)
archives to further reduce their size.
<p>Driver information files must conform to the format defined in
<a href="man-ppdcfile.html?TOPIC=Man+Pages"><b>ppdcfile</b>(5).</a>
<h2 class="title"><a name="SEE_ALSO">See Also</a></h2>
<a href="man-backend.html?TOPIC=Man+Pages"><b>backend</b>(7),</a>
<a href="man-cups.html?TOPIC=Man+Pages"><b>cups</b>(1),</a>
<a href="man-cupsd.html?TOPIC=Man+Pages"><b>cupsd</b>(8),</a>
<a href="man-cupsd.conf.html?TOPIC=Man+Pages"><b>cupsd.conf</b>(5),</a>
<a href="man-filter.html?TOPIC=Man+Pages"><b>filter</b>(7),</a>
<a href="man-ppdcfile.html?TOPIC=Man+Pages"><b>ppdcfile</b>(5),</a>
CUPS Online Help (<a href="http://localhost:631/help">http://localhost:631/help</a>)
<h2 class="title"><a name="COPYRIGHT">Copyright</a></h2>
Copyright © 2007-2018 by Apple Inc.
</body>
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