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conky/doc/conky-howto.xml

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<?xml version='1.0' encoding="utf-8"?>
<!DOCTYPE guide SYSTEM "http://www.gentoo.org/dtd/guide.dtd">
<guide link="/doc/en/conky-howto.xml">
<title>Gentoo Linux Conky Howto</title>
<author title="Author">
<mail link="admin@sdesign.us">Bill Woodford</mail>
</author>
<author title="Editor">
<mail link="brenden@diddyinc.com">Brenden Matthews</mail>
</author>
<abstract>This document describes how to install and configure the system
monitor known as Conky.</abstract>
<!-- The content of this document is licensed under the CC-BY-SA license -->
<!-- See http://creativecommons.org/licenses/by-sa/2.5 -->
<license />
<version>1.0</version>
<date>2006-02-22</date>
<chapter>
<title>Background</title>
<section>
<title>Introduction to Conky</title>
<body>
<p>So you have a Gentoo machine, and have already learned 30
different commands to monitor different aspects of what your
computer is doing at the current moment. What do you do from
here? Isn't there an easier way to monitor system performance
and see what its doing, as well as the resources its using to
perform all those tasks? This is what a system monitor, such
as Conky, provides.</p>
</body>
</section>
<section>
<title>What it does</title>
<body>
<p>Unlike other system monitors such as top, Conky can run as
a window in an X session, or by drawing to the root window
(there is also an option to have Conky display information to
stdout, but we won't discuss that here). It displays the
information it has gathered through the use of both text,
progress bars, and graphs. Also unlike top, the way it is
formatted is completely user-configurable. In addition to
monitoring the system itself, Conky can also give you
information about several music players (such as XMMS, BMPx,
Music Player Daemon, and Audacious Media Player), tell you how
many new messages are in your mail spool, and plenty more. If
the functionality you require isn't in Conky yet, it is a
simple matter of writing a script to get the information you
would like - some examples of this, which have already been
done are RSS feeds, POP3 e-mail message count, local weather,
boinc status, and even the status of portage.</p>
</body>
</section>
</chapter>
<chapter>
<title>Installing Conky</title>
<section>
<title>Base install</title>
<body>
<p>Gentoo provides an ebuild to quickly and easily install
Conky. Pay particular attention to the the USE flags. You'll
most likely want X11 support (
<c>X</c>), and make sure you select the USE flags for any
music players (other than MPD) which you want. XMMS (
<c>xmms</c>), Audacious (
<c>audacious</c>), BMPx (
<c>bmpx</c>), or XMMS support via the xmms-infopipe plugin (
<c>infopipe</c>).</p>
<pre caption="/etc/portage/package.use">
<comment># Example line to append to /etc/portage/package.use if you don't
want the
default USE flags.</comment>
<i>app-admin/conky xmms infopipe -ipv6</i>
</pre>
<p>In addition, the
<c>truetype</c>USE flag compiles support for TrueType fonts
with the use of Xft. Most users will want this as well.</p>
<p>Once you have your USE flags correctly set up, it's time to
install Conky!</p>
<pre caption="Installing Conky">
<i>emerge -av conky</i>
</pre>
<p>You can test Conky to see how it will look by running the
command
<c>conky</c>in a terminal. This will likely give you a good
reference to how it will look and what you want to change, add
or even remove.</p>
<pre caption="Running Conky for the first time">
$
<i>conky</i>
</pre>
<p>Once you have an idea of how Conky looks, you can now move
on to configuring it!</p>
</body>
</section>
<section>
<title>Configuring Conky</title>
<body>
<p>By default, Conky will look for a configuration file in the
users home directory located at
<path>~/.config/conky/conky.conf</path>This file contains all
the configuration options, and the static text, colors and
other variables which control what data is shown to the user.
Conky also provides a great sample configuration, located at
<path>
/usr/share/doc/conky-version/Conkyrc.sample.gz</path>Make sure
to replace "version" with the specific version of Conky you
have installed.</p>
<pre caption="Copying the sample configuration to your home directory">
$
<i>mkdir -p ~/.config/conky</i>
$
<i>zcat /usr/share/conky-1.6.0/conkyrc.sample.gz &gt;&gt;
~/.config/conky/conky.conf</i>
</pre>
<note>Make sure to replace "1.6.0" with the specific version
of Conky you have installed.</note>
<p>Now, open up the sample configuration in the text editor of
your choice. You may notice that there are two seperate
sections of the configuration file. The first section of the
file, contains the programs configuration options and controls
how it acts. This includes things such as the
<c>update_interval</c>, or how often Conky will update the
information on the screen. The second section contains the
actual text, graphs, and variables which are rendered on the
screen. This includes things such as the system uptime (
<c>$uptime</c>), cpu usage (
<c>$cpu</c>) and anything else you want to be shown. The first
section of the file starts right from the beginning, the
second section is comprised of everything after the line which
says "
<c>TEXT</c>". Comments in the file start with
<c>#</c>, but keep in mind that even if a line is commented
out in the second section of the file, the text will still be
rendered to the screen.</p>
<p>Lists of all the available configuration options and
variables are kept at
<uri>
http://conky.sourceforge.net/config_settings.html</uri>and
<uri>http://conky.sourceforge.net/variables.html</uri>. Also,
there's a few great sample configurations and screenshots of
working configurations at
<uri>http://conky.sourceforge.net/screenshots.html</uri>.</p>
</body>
</section>
</chapter>
<chapter>
<title>Extending Conky</title>
<section>
<title>Beyond the built-in variables</title>
<body>
<p>So you've gotten this far, and have scoured the Conky
documentation for that extra variable which Conky just doesn't
seem to have... You're in luck! Conky provides several
variables for just this reason!
<c>$exec</c>Will run a command every time Conky updates,
<c>$execi</c>will run a command at a specified interval and
<c>$texeci</c>will run a command in it's own thread at a
specified interval.</p>
<pre caption="Scripting examples">
<i>${exec grep 'sudo' /var/log/messages | tail -n 4}</i>
<i>${execi 30 ~/scripts/emerge-status.sh</i>
<i>${texeci 600 ~/scripts/gmail.pl}</i>
</pre>
<note>While any command which works in a command shell will
work in any of these variables, it is important to keep in
mind that the commands must exit. This means that commands
like
<c>tail -f</c>which keep running will NOT work
properly.</note>
</body>
</section>
</chapter>
</guide>