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<![endif]--><script type="text/javascript" src="common/browserDetect.js"></script><script type="text/javascript" src="common/jquery/jquery-1.7.2.min.js"></script><script type="text/javascript" src="common/jquery/jquery.ui.all.js"></script><script type="text/javascript" src="common/jquery/jquery.cookie.js"></script><script type="text/javascript" src="common/jquery/treeview/jquery.treeview.min.js"></script><script type="text/javascript" src="common/jquery/layout/jquery.layout.js"></script><script type="text/javascript" src="search/l10n.js"></script><script type="text/javascript" src="search/htmlFileInfoList.js"></script><script type="text/javascript" src="search/nwSearchFnt.js"></script><script type="text/javascript" src="search/stemmers/en_stemmer.js"><!--//make this scalable to other languages as well.--></script><script type="text/javascript" src="search/index-1.js"></script><script type="text/javascript" src="search/index-2.js"></script><script type="text/javascript" src="search/index-3.js"></script></head><body><noscript><div id="noscript">JavaScript is disabled on your browser. Please enable JavaScript to enjoy all the features of this site.</div></noscript><div id="header"><a href="index.html"><img style="margin-right: 2px; height: 59px; padding-right: 25px; padding-top: 8px" align="right" src="common/images/logo.png" alt=" Documentation"></img></a><h1>Recoll user manual<br></br>Installation and configuration</h1><div id="navheader"><table class="navLinks"><tr><td><a id="showHideButton" href="#" onclick="myLayout.toggle('west')" class="pointLeft" tabindex="5" title="Hide TOC tree">Sidebar
</a></td><td><a accesskey="p" class="navLinkPrevious" tabindex="5" href="RCL.INSTALL.BUILDING.INSTALL.html">Prev</a>
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<a accesskey="n" class="navLinkNext" tabindex="5" href="RCL.INSTALL.CONFIG.ENVIR.html">Next</a></td></tr></table></div></div><div id="content"><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="RCL.INSTALL.CONFIG"></a>Configuration overview</h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="sect2"><a href="RCL.INSTALL.CONFIG.ENVIR.html">Environment variables</a></span></dt><dt><span class="sect2"><a href="RCL.INSTALL.CONFIG.RECOLLCONF.html">The main configuration file, recoll.conf</a></span></dt><dt><span class="sect2"><a href="RCL.INSTALL.CONFIG.FIELDS.html">The fields file</a></span></dt><dt><span class="sect2"><a href="RCL.INSTALL.CONFIG.MIMEMAP.html">The mimemap file</a></span></dt><dt><span class="sect2"><a href="RCL.INSTALL.CONFIG.MIMECONF.html">The mimeconf file</a></span></dt><dt><span class="sect2"><a href="RCL.INSTALL.CONFIG.MIMEVIEW.html">The mimeview file</a></span></dt><dt><span class="sect2"><a href="RCL.INSTALL.CONFIG.PTRANS.html">The <code class="filename">ptrans</code> file</a></span></dt><dt><span class="sect2"><a href="RCL.INSTALL.CONFIG.EXAMPLES.html">Examples of configuration adjustments</a></span></dt></dl></div><p>Most of the parameters specific to the
<span class="command"><strong>recoll</strong></span> GUI are set through the
<span class="guilabel">Preferences</span> menu and stored in the standard Qt
place (<code class="filename">$HOME/.config/Recoll.org/recoll.conf</code>).
You probably do not want to edit this by hand.</p><p><span class="application">Recoll</span> indexing options are set inside text configuration
files located in a configuration directory. There can be
several such directories, each of which defines the parameters
for one index.</p><p>The configuration files can be edited by hand or through
the <span class="guilabel">Index configuration</span> dialog
(<span class="guilabel">Preferences</span> menu). The GUI tool will try
to respect your formatting and comments as much as possible,
so it is quite possible to use both approaches on the same
configuration.</p><p>The most accurate documentation for the
configuration parameters is given by comments inside the default
files, and we will just give a general overview here.</p><p>For each index, there are at least two sets of
configuration files. System-wide configuration files are kept
in a directory named
like <code class="filename">/usr/share/recoll/examples</code>,
and define default values, shared by all indexes. For each
index, a parallel set of files defines the customized
parameters.</p><p>The default location of the customized configuration is the
<code class="filename">.recoll</code>
directory in your home. Most people will only use this
directory.</p><p>This location can be changed, or others can be added with the
<code class="envar">RECOLL_CONFDIR</code> environment variable or the
<code class="option">-c</code> option parameter to <span class="command"><strong>recoll</strong></span> and
<span class="command"><strong>recollindex</strong></span>.</p><p>In addition (as of <span class="application">Recoll</span> version 1.19.7), it is possible
to specify two additional configuration directories which will
be stacked before and after the user configuration
directory. These are defined by
the <code class="envar">RECOLL_CONFTOP</code>
and <code class="envar">RECOLL_CONFMID</code> environment
variables. Values from configuration files inside the top
directory will override user ones, values from configuration
files inside the middle directory will override system ones
and be overriden by user ones. These two variables may be of
use to applications which augment <span class="application">Recoll</span> functionality, and
need to add configuration data without disturbing the user's
files. Please note that the two, currently single, values will
probably be interpreted as colon-separated lists in the
future: do not use colon characters inside the directory
paths.</p><p>If the <code class="filename">.recoll</code> directory does not
exist when <span class="command"><strong>recoll</strong></span> or
<span class="command"><strong>recollindex</strong></span> are started, it will be created
with a set of empty configuration files.
<span class="command"><strong>recoll</strong></span> will give you a chance to edit the
configuration file before starting
indexing. <span class="command"><strong>recollindex</strong></span> will proceed
immediately. To avoid mistakes, the automatic directory
creation will only occur for the
default location, not if <code class="option">-c</code> or
<code class="envar">RECOLL_CONFDIR</code> were used (in the latter
cases, you will have to create the directory).</p><p>All configuration files share the same format. For
example, a short extract of the main configuration file might
look as follows:</p><pre class="programlisting">
# Space-separated list of directories to index.
topdirs = ~/docs /usr/share/doc
[~/somedirectory-with-utf8-txt-files]
defaultcharset = utf-8
</pre><p>There are three kinds of lines: </p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>Comment (starts with
<span class="emphasis"><em>#</em></span>) or empty.</p></li><li class="listitem"><p>Parameter affectation (<span class="emphasis"><em>name =
value</em></span>).</p></li><li class="listitem"><p>Section definition
([<span class="emphasis"><em>somedirname</em></span>]).</p></li></ul></div><p>Long lines can be broken by ending each incomplete part with
a backslash (<code class="literal">\</code>).</p><p>Depending on the type of configuration file, section
definitions either separate groups of parameters or allow
redefining some parameters for a directory sub-tree. They stay
in effect until another section definition, or the end of
file, is encountered. Some of the parameters used for indexing
are looked up hierarchically from the current directory
location upwards. Not all parameters can be meaningfully
redefined, this is specified for each in the next
section. </p><p>When found at the beginning of a file path, the tilde
character (~) is expanded to the name of the user's home
directory, as a shell would do.</p><p>Some parameters are lists of strings. White space is used for
separation. List elements with embedded spaces can be quoted using
double-quotes. Double quotes inside these elements can be escaped
with a backslash.</p><p>No value inside a configuration file can contain a newline
character. Long lines can be continued by escaping the
physical newline with backslash, even inside quoted strings.</p><pre class="programlisting">
astringlist = "some string \
with spaces"
thesame = "some string with spaces"
</pre><p>Parameters which are not part of string lists can't be
quoted, and leading and trailing space characters are
stripped before the value is used.</p><p><strong>Encoding issues.��</strong>Most of the configuration parameters are plain ASCII. Two
particular sets of values may cause encoding issues:</p><p>
</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>File path parameters may contain non-ascii
characters and should use the exact same byte values as found in
the file system directory. Usually, this means that the
configuration file should use the system default locale
encoding.</p></li><li class="listitem"><p>The <code class="envar">unac_except_trans</code> parameter
should be encoded in UTF-8. If your system locale is not UTF-8, and
you need to also specify non-ascii file paths, this poses a
difficulty because common text editors cannot handle multiple
encodings in a single file. In this relatively unlikely case, you
can edit the configuration file as two separate text files with
appropriate encodings, and concatenate them to create the complete
configuration.</p></li></ul></div><p>
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indexing</a></span></li></ul></li><li><span class="file"><a href="RCL.INDEXING.MONITOR.html" tabindex="1">Real time indexing</a></span><ul><li><span class="file"><a href="RCL.INDEXING.MONITOR.FASTFILES.html" tabindex="1">Slowing down the reindexing rate for fast changing
files</a></span></li></ul></li></ul></li><li><span class="file"><a href="RCL.SEARCH.html" tabindex="1">Searching</a></span><ul><li><span class="file"><a href="RCL.SEARCH.GUI.html" tabindex="1">Searching with the Qt graphical user interface</a></span><ul><li><span class="file"><a href="RCL.SEARCH.GUI.SIMPLE.html" tabindex="1">Simple search</a></span></li><li><span class="file"><a href="RCL.SEARCH.GUI.RESLIST.html" tabindex="1">The default result list</a></span><ul><li><span class="file"><a href="RCL.SEARCH.GUI.RESLIST.SUGGS.html" tabindex="1">No results: the spelling suggestions</a></span></li><li><span class="file"><a href="RCL.SEARCH.GUI.RESULTLIST.MENU.html" tabindex="1">The result list right-click menu</a></span></li></ul></li><li><span class="file"><a href="RCL.SEARCH.GUI.RESTABLE.html" tabindex="1">The result table</a></span></li><li><span class="file"><a href="RCL.SEARCH.GUI.RUNSCRIPT.html" tabindex="1">Running arbitrary commands on result files (1.20 and later)</a></span></li><li><span class="file"><a href="RCL.SEARCH.GUI.THUMBNAILS.html" tabindex="1">Displaying thumbnails</a></span></li><li><span class="file"><a href="RCL.SEARCH.GUI.PREVIEW.html" tabindex="1">The preview window</a></span><ul><li><span class="file"><a href="RCL.SEARCH.GUI.PREVIEW.SEARCH.html" tabindex="1">Searching inside the preview</a></span></li></ul></li><li><span class="file"><a href="RCL.SEARCH.GUI.FRAGBUTS.html" tabindex="1">The Query Fragments window</a></span></li><li><span class="file"><a href="RCL.SEARCH.GUI.COMPLEX.html" tabindex="1">Complex/advanced search</a></span><ul><li><span class="file"><a href="RCL.SEARCH.GUI.COMPLEX.TERMS.html" tabindex="1">Avanced search: the "find" tab</a></span></li><li><span class="file"><a href="RCL.SEARCH.GUI.COMPLEX.FILTER.html" tabindex="1">Avanced search: the "filter" tab</a></span></li><li><span class="file"><a href="RCL.SEARCH.GUI.COMPLEX.HISTORY.html" tabindex="1">Avanced search 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index:</a></span></li><li><span class="file"><a href="RCL.INSTALL.CONFIG.RECOLLCONF.TERMS.html" tabindex="1">Parameters affecting how we generate terms:</a></span></li><li><span class="file"><a href="RCL.INSTALL.CONFIG.RECOLLCONF.STORAGE.html" tabindex="1">Parameters affecting where and how we store things:</a></span></li><li><span class="file"><a href="RCL.INSTALL.CONFIG.RECOLLCONF.IDXTHREADS.html" tabindex="1">Parameters affecting multithread processing</a></span></li><li><span class="file"><a href="RCL.INSTALL.CONFIG.RECOLLCONF.MISC.html" tabindex="1">Miscellaneous parameters:</a></span></li></ul></li><li><span class="file"><a href="RCL.INSTALL.CONFIG.FIELDS.html" tabindex="1">The fields file</a></span><ul><li><span class="file"><a href="RCL.INSTALL.CONFIG.FIELDS.XATTR.html" tabindex="1">Extended attributes in the fields file</a></span></li></ul></li><li><span class="file"><a href="RCL.INSTALL.CONFIG.MIMEMAP.html" tabindex="1">The mimemap file</a></span></li><li><span 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