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<?xml version='1.0'?>
<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<article>
<section>
<title>vol_id</title>
<refentry>
<refentryinfo>
<title>vol_id</title>
<date>March 2006</date>
<productname>volume_id</productname>
</refentryinfo>
<refmeta>
<refentrytitle>vol_id</refentrytitle>
<manvolnum>8</manvolnum>
<refmiscinfo class="version"></refmiscinfo>
</refmeta>
<refnamediv>
<refname>vol_id</refname><refpurpose>probe filesystem type and read label and uuid</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>vol_id</command>
<arg><option>--export</option></arg>
<arg><option>-t</option></arg>
<arg><option>-l</option></arg>
<arg><option>-u</option></arg>
<arg><replaceable>device</replaceable></arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1><title>DESCRIPTION</title>
<para><command>vol_id</command> is usually called from a udev rule, to
provide udev with the filesystem type, the label and the uuid of a
volume. <command>vol_id</command> supports all common filesystem formats
and detects various raid setups to prevent the recognition of raid members
as a volume with a filesystem.</para>
</refsect1>
<refsect1><title>OPTIONS</title>
<variablelist>
<varlistentry>
<term><option>--export</option></term>
<listitem>
<para>print all values in key/value format to import them into the
environment.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-t</option></term>
<listitem>
<para>print the filesystem type</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-l</option></term>
<listitem>
<para>
print the safe version of volume label suitable for
use as filename. Use <option>-L</option> to print literal label
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-u</option></term>
<listitem>
<para>print the uuid of a volume</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-L</option></term>
<listitem>
<para>
print raw volume label
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1><title>ENVIRONMENT</title>
<variablelist>
<varlistentry>
<term><option>UDEV_LOG</option></term>
<listitem>
<para>Set the syslog priority.</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1><title>EXIT STATUS</title>
<para><command>vol_id</command> will only return successful if the
value asked for is not empty. All trailing whitespace will be removed,
spaces replaced by underscore and slashes ignored.</para>
</refsect1>
<refsect1><title>AUTHOR</title>
<para>Written by Kay Sievers <email>kay.sievers@vrfy.org</email></para>
</refsect1>
<refsect1>
<title>SEE ALSO</title>
<para><citerefentry>
<refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum>
</citerefentry></para>
</refsect1>
</refentry>
</section>
</article>
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