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<a name="mu-query"></a>
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<p>
Next: <a href="mu-2047.html#mu-2047" accesskey="n" rel="next">mu 2047</a>, Previous: <a href="mu-ldflags.html#mu-ldflags" accesskey="p" rel="prev">mu ldflags</a>, Up: <a href="mu.html#mu" accesskey="u" rel="up">mu</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Function-Index.html#Function-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="mu-query-1"></a>
<h4 class="subsection">2.17.6 mu query</h4>
<p>The <code>mu query</code> command queries values from Mailutils
configuration files.  It takes one or more configuration paths
(see <a href="Paths.html#Paths">Paths</a>) as its arguments.  On output, it displays the values
it found, each value on a separate line.  If the requested value is a
block statement it is displayed in full.  For example, if main
configuration file contained:
</p>
<div class="example">
<pre class="example">logging {
   syslog yes;
   facility mail;
}
</pre></div>

<p>Then:
</p>
<div class="example">
<pre class="example">$ mu query .logging.syslog
syslog yes;
$ mu query .logging.syslog .logging.facility
syslog yes;
facility mail;
$ mu query .logging
logging {
  syslog yes;
  facility mail;
};
</pre></div>

<p>Several command line options allow to modify output format.  The
<samp>--value</samp> option instructs the command to output only values:
</p>
<div class="example">
<pre class="example">$ mu query --value .logging.syslog
yes
</pre></div>

<p>The <samp>--path</samp> option instructs it to print full pathnames for
each value: 
</p>
<div class="example">
<pre class="example">$ mu query --path .logging.syslog
logging.syslog: yes
</pre></div>

<p>The <samp>--program</samp> option instructs <code>mu</code> to behave as if
it was called under another program name.  For example, the following
command:
</p>
<div class="example">
<pre class="example">$ mu query --program=pop3d .server.transcript
</pre></div>

<p>will return the value of the &lsquo;<samp>.server.transcript</samp>&rsquo; statement which
the <code>pop3d</code> utility would see.
</p>
<p>By default, <code>mu query</code> operates on the main configuration
file.  Another configuration file can be supplied using the
<samp>--file</samp> (<samp>-f</samp>) option:
</p>
<div class="example">
<pre class="example">$ mu query --file /usr/local/etc/file.conf .pidfile
</pre></div>




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