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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>Themes</title><link rel="stylesheet" type="text/css" href="aptitude.css" /><meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /><link rel="home" href="index.html" title="aptitude user's manual" /><link rel="up" href="ch02s05.html" title="Customizing aptitude" /><link rel="prev" href="ch02s05s05.html" title="Configuration file reference" /><link rel="next" href="ch02s06.html" title="Playing Minesweeper" /><link rel="preface" href="pr01.html" title="Introduction" /><link rel="chapter" href="ch01.html" title="Chapter 1. Getting started" /><link rel="chapter" href="ch02.html" title="Chapter 2. aptitude reference guide" /><link rel="chapter" href="ch03.html" title="Chapter 3. aptitude frequently asked questions" /><link rel="chapter" href="ch04.html" title="Chapter 4. Credits" /><link rel="reference" href="rn01.html" title="Command-line reference" /><link rel="refentry" href="rn01re01.html" title="aptitude" /><link rel="refentry" href="rn01re02.html" title="aptitude-create-state-bundle" /><link rel="refentry" href="rn01re03.html" title="aptitude-run-state-bundle" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Themes</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch02s05s05.html"><img src="images/prev.gif" alt="Prev" /></a> </td><th width="60%" align="center">Customizing <span class="command"><strong>aptitude</strong></span></th><td width="20%" align="right"> <a accesskey="n" href="ch02s06.html"><img src="images/next.gif" alt="Next" /></a></td></tr></table><hr /></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="secThemes"></a>Themes</h3></div></div></div><p>
A <em class="firstterm">theme</em> in <span class="command"><strong>aptitude</strong></span> is simply a
collection of settings that <span class="quote">“<span class="quote">go together</span>”</span>.
Themes work by overriding the default values of options: if
an option is not set in the system configuration file or in
your personal configuration file, <span class="command"><strong>aptitude</strong></span> will use the
setting from the current theme, if one is available, before
using the standard default value.
</p><p>
A theme is simply a named group under
<code class="literal">Aptitude::Themes</code>; each configuration
option contained in the group will override the
corresponding option in the global configuration. For
instance, if the <code class="literal">Dselect</code> theme is
selected, the option
<code class="literal">Aptitude::Themes::Dselect::Aptitude::UI::Package-Display-Format</code>
will override the default value of the option
<code class="literal">Aptitude::UI::Package-Display-Format</code>.
</p><p>
To select a theme, set the configuration option <code class="literal">Aptitude::Theme</code> to the name of the theme; for instance,
</p><pre class="screen">Aptitude::Theme Vertical-Split;</pre><p>
The following themes are shipped with <span class="command"><strong>aptitude</strong></span> in
<code class="filename">/usr/share/aptitude/aptitude-defaults</code>:
</p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="literal">Dselect</code></span></dt><dd><p>
This theme makes <span class="command"><strong>aptitude</strong></span> look and behave more like
the legacy <code class="literal">dselect</code> package manager:
</p><div class="screenshot"><div class="mediaobject"><table border="0" summary="manufactured viewport for HTML img" style="cellpadding: 0; cellspacing: 0;" width="100%"><tr><td><img src="images/dselect-theme.png" width="100%" alt="[dselect theme]" /></td></tr></table><div class="longdesc-link" align="right"><br clear="all" /><span class="longdesc-link">[<a href="ld-idm7988.html" target="longdesc">D</a>]</span></div></div></div></dd><dt><span class="term"><code class="literal">Vertical-Split</code></span></dt><dd><p>
This theme rearranges the display: instead of the
current package's description appearing underneath the
package list, it is displayed to the right of the
package list. This theme is useful with very wide
terminals, and perhaps also when editing the built-in
hierarchy of packages.
</p><div class="screenshot"><div class="mediaobject"><table border="0" summary="manufactured viewport for HTML img" style="cellpadding: 0; cellspacing: 0;" width="100%"><tr><td><img src="images/vertical-split-theme.png" width="100%" alt="[vertical split theme]" /></td></tr></table><div class="longdesc-link" align="right"><br clear="all" /><span class="longdesc-link">[<a href="ld-idm8001.html" target="longdesc">D</a>]</span></div></div></div></dd></dl></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch02s05s05.html"><img src="images/prev.gif" alt="Prev" /></a> </td><td width="20%" align="center"><a accesskey="u" href="ch02s05.html"><img src="images/up.gif" alt="Up" /></a></td><td width="40%" align="right"> <a accesskey="n" href="ch02s06.html"><img src="images/next.gif" alt="Next" /></a></td></tr><tr><td width="40%" align="left" valign="top">Configuration file reference </td><td width="20%" align="center"><a accesskey="h" href="index.html"><img src="images/home.gif" alt="Home" /></a></td><td width="40%" align="right" valign="top"> Playing Minesweeper</td></tr></table></div></body></html>
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