+ <refsect2><title>udevadm hwdb <optional>options</optional></title>
+ <para>Maintain the hardware database index in <filename>/etc/udev/hwdb.bin</filename>.</para>
+ <variablelist>
+ <varlistentry>
+ <term><option>--update</option></term>
+ <listitem>
+ <para>Compile the hardware database information located in /usr/lib/udev/hwdb.d/,
+ /etc/udev/hwdb.d/ and store it in <filename>/etc/udev/hwdb.bin</filename>. This should be done after
+ any update to the source files; it will not be called automatically. The running
+ udev daemon will detect a new database on its own and does not need to be
+ notified about it.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>--test=<replaceable>string</replaceable></option></term>
+ <listitem>
+ <para>Query the database with a modalias string, and print the
+ retrieved properties.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>--root=<replaceable>string</replaceable></option></term>
+ <listitem>
+ <para>Alternative root path in the filesystem for reading and writing files.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect2>
+