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<h1>
The APCUPSD Developers Manual</h1></center>
<center>© 2001 Riccardo Facchetti</center>
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<h2>
<i>Table of Contents</i></h2></center>
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<li>
<font size=+1><a href="#Introduction">Introduction</a></font></li>
<li>
<font size=+1><a href="#What is APCUPSD">What is APCUPSD</a></font></li>
<li>
<font size=+1><a href="codingstyle.html">Coding Style</a></font></li>
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<font size=+1><a href="autoconf.html">Autoconf</a></font></li>
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<font size=+1><a href="makefiles.html">Makefiles Subsystem</a></font></li>
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<font size=+1><a href="porting.html">Porting APCUPSD to other Architectures</a></font></li>
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<font size=+1><a href="minicom.html">Talk with a Smart UPS using Minicom</a></font></li>
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<font size=+1><a href="logging.html">Message Logging</a></font></li>
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<font size=+1><a href="threads.html">APCUPSD Threads</a></font></li>
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<font size=+1><a href="drivers.html">APCUPSD Drivers</a></font></li>
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<font size=+1><a href="multiups.html">Multiple UPSes Controlled by a Single
Computer</a></font></li>
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<font size=+1><a href="network.html">Network Design</a></font></li>
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<font size=+1><a href="authentication.html">Authentication Design</a></font></li>
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<font size=+1><a href="vups.html">The Virtual Uninterruptible Power Source</a></font></li>
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<font size=+1><a href="smart.html">Smart UPSes</a></font></li>
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<font size=+1><a href="smart.html#BackUPS Pro">BackUPS Pro</a></font></li>
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<font size=+1><a href="smart.html#BackUPS Pro (new version)">BackUPS Pro
(new version)</a></font></li>
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<font size=+1><a href="smart.html#SmartUPS v/s">SmartUPS v/s</a></font></li>
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<font size=+1><a href="dumb.html">Dumb UPSes</a></font></li>
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<li>
<font size=+1><a href="dumb.html#APC Interface Expander">APC Interface
Expander</a></font></li>
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<font size=+1><a href="dumb.html#APC Powercell Network">APC Powercell Network</a></font></li>
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<font size=+1><a href="dumb.html#ShareUPS">ShareUPS</a></font></li>
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<font size=+1><a href="dumb.html#BackUPS">BackUPS</a></font></li>
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<font size=+1><a href="dumb.html#Dumb Cable">Dumb Cable</a></font></li>
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<font size=+1><a href="apc.html">APC Documents</a></font></li>
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<font size=+1><a href="apc.html#Meanings of G command">Meaning of G Command</a></font></li>
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<font size=+1><a href="apc.html#APC Statement">APC Statement</a></font></li>
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<li>
<font size=+1><a href="changelog.html">Old ChangeLogs</a></font></li>
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<font size=+1><a href="changelog.html#3.x and before">3.x and Before</a></font></li>
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<font size=+1><a href="changelog.html#4.0.0 Alpha 7 and before">4.0.0 Alpha
7 and before</a></font></li>
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<hr WIDTH="100%">
<h2>
<a NAME="Introduction"></a>Introduction</h2>
<p><br>This guide is intended to be an aid to anyone willing to start developing
apcupsd. It contains information that is not strictly needed by
<br>users of the package. Part of these information will be passed to the
user guide in a format suitable for general use.
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<h2>
<a NAME="What is APCUPSD"></a>What is APCUPSD</h2>
<p><br>APCUPSD is a package for monitoring the status of an UPS connected
to a computer and powering a power line. When a power event happens to
the power utility, APCUPSD detects the event and take the correct action
to ensure safe operations to the computers connected to the UPS.
<br>See:
<br>K. Sibbald, APCUPSD Users Manual
<br>R. Facchetti, "Monitoring Your UPS with APCUPSD", Linux Journal, Dec.
2000, n.80, pp. 98-115.
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