2007-11-09 00:51:59 +08:00
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<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<refentry id="udevadm">
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<refentryinfo>
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2007-11-09 00:51:59 +08:00
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<title>udevadm</title>
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2010-05-24 23:00:15 +08:00
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<productname>udev</productname>
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</refentryinfo>
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2007-11-09 00:51:59 +08:00
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2010-05-24 23:00:15 +08:00
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<refmeta>
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<refentrytitle>udevadm</refentrytitle>
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<manvolnum>8</manvolnum>
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<refmiscinfo class="version"></refmiscinfo>
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</refmeta>
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2007-11-09 00:51:59 +08:00
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2010-05-24 23:00:15 +08:00
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<refnamediv>
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<refname>udevadm</refname><refpurpose>udev management tool</refpurpose>
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</refnamediv>
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2007-11-09 00:51:59 +08:00
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2010-05-24 23:00:15 +08:00
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>udevadm</command>
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<arg><option>--debug</option></arg>
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<arg><option>--version</option></arg>
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<arg><option>--help</option></arg>
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</cmdsynopsis>
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<cmdsynopsis>
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<command>udevadm info <replaceable>options</replaceable></command>
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</cmdsynopsis>
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<cmdsynopsis>
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<command>udevadm trigger <optional>options</optional></command>
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</cmdsynopsis>
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<cmdsynopsis>
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<command>udevadm settle <optional>options</optional></command>
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</cmdsynopsis>
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<cmdsynopsis>
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<command>udevadm control <replaceable>command</replaceable></command>
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</cmdsynopsis>
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<cmdsynopsis>
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<command>udevadm monitor <optional>options</optional></command>
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</cmdsynopsis>
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<cmdsynopsis>
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<command>udevadm test <optional>options</optional> <replaceable>devpath</replaceable></command>
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</cmdsynopsis>
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2011-08-05 08:00:30 +08:00
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<cmdsynopsis>
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<command>udevadm test-builtin <optional>options</optional> <replaceable>command</replaceable> <replaceable>devpath</replaceable></command>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1><title>Description</title>
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<para>udevadm expects a command and command specific options. It
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controls the runtime behavior of udev, requests kernel events,
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manages the event queue, and provides simple debugging mechanisms.</para>
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</refsect1>
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2007-11-09 00:51:59 +08:00
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2010-05-24 23:00:15 +08:00
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<refsect1><title>OPTIONS</title>
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<variablelist>
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<varlistentry>
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<term><option>--debug</option></term>
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<listitem>
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<para>Print debug messages to stderr.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--version</option></term>
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<listitem>
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<para>Print version number.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--help</option></term>
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<listitem>
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<para>Print help text.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<refsect2><title>udevadm info <replaceable>options</replaceable></title>
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<para>Queries the udev database for device information
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stored in the udev database. It can also query the properties
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of a device from its sysfs representation to help creating udev
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rules that match this device.</para>
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<variablelist>
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<varlistentry>
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<term><option>--query=<replaceable>type</replaceable></option></term>
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<listitem>
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<para>Query the database for specified type of device data. It needs the
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<option>--path</option> or <option>--name</option> to identify the specified
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device. Valid queries are:
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<command>name</command>, <command>symlink</command>, <command>path</command>,
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<command>property</command>, <command>all</command>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--path=<replaceable>devpath</replaceable></option></term>
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<listitem>
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<para>The devpath of the device to query.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--name=<replaceable>file</replaceable></option></term>
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<listitem>
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<para>The name of the device node or a symlink to query</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--root</option></term>
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<listitem>
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<para>The udev root directory: <filename>/dev</filename>. If used in conjunction
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with a <command>name</command> or <command>symlink</command> query, the
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query returns the absolute path including the root directory.</para>
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</listitem>
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</varlistentry>
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2011-03-23 09:31:09 +08:00
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<varlistentry>
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<term><option>--run</option></term>
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<listitem>
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<para>The udev runtime directory: <filename>/run/udev</filename>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--attribute-walk</option></term>
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<listitem>
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<para>Print all sysfs properties of the specified device that can be used
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in udev rules to match the specified device. It prints all devices
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along the chain, up to the root of sysfs that can be used in udev rules.</para>
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</listitem>
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</varlistentry>
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2010-12-10 05:45:13 +08:00
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<varlistentry>
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<term><option>--export</option></term>
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<listitem>
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<para>Print output as key/value pairs. Values are enclosed in single quotes.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--export-prefix=<replaceable>name</replaceable></option></term>
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<listitem>
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<para>Add a prefix to the key name of exported values.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--device-id-of-file=<replaceable>file</replaceable></option></term>
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<listitem>
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<para>Print major/minor numbers of the underlying device, where the file
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lives on.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--export-db</option></term>
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<listitem>
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<para>Export the content of the udev database.</para>
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</listitem>
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</varlistentry>
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2011-04-14 04:33:01 +08:00
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<varlistentry>
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<term><option>--cleanup-db</option></term>
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<listitem>
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<para>Cleanup the udev database.</para>
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</listitem>
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</varlistentry>
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2010-05-24 23:00:15 +08:00
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<varlistentry>
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<term><option>--version</option></term>
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<listitem>
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<para>Print version.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--help</option></term>
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<listitem>
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<para>Print help text.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect2>
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2007-11-09 00:51:59 +08:00
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2010-05-24 23:00:15 +08:00
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<refsect2><title>udevadm trigger <optional>options</optional></title>
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<para>Request device events from the kernel. Primarily used to replay events at system coldplug time.</para>
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<variablelist>
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<varlistentry>
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<term><option>--verbose</option></term>
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<listitem>
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<para>Print the list of devices which will be triggered.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--dry-run</option></term>
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<listitem>
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<para>Do not actually trigger the event.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--type=<replaceable>type</replaceable></option></term>
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<listitem>
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<para>Trigger a specific type of devices. Valid types are:
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<command>devices</command>, <command>subsystems</command>.
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The default value is <command>devices</command>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--action=<replaceable>action</replaceable></option></term>
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<listitem>
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<para>Type of event to be triggered. The default value is <command>change</command>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--subsystem-match=<replaceable>subsystem</replaceable></option></term>
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<listitem>
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<para>Trigger events for devices which belong to a matching subsystem. This option
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can be specified multiple times and supports shell style pattern matching.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--subsystem-nomatch=<replaceable>subsystem</replaceable></option></term>
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<listitem>
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<para>Do not trigger events for devices which belong to a matching subsystem. This option
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can be specified multiple times and supports shell style pattern matching.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--attr-match=<replaceable>attribute</replaceable>=<replaceable>value</replaceable></option></term>
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<listitem>
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<para>Trigger events for devices with a matching sysfs attribute. If a value is specified
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along with the attribute name, the content of the attribute is matched against the given
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value using shell style pattern matching. If no value is specified, the existence of the
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sysfs attribute is checked. This option can be specified multiple times.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--attr-nomatch=<replaceable>attribute</replaceable>=<replaceable>value</replaceable></option></term>
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<listitem>
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<para>Do not trigger events for devices with a matching sysfs attribute. If a value is
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specified along with the attribute name, the content of the attribute is matched against
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the given value using shell style pattern matching. If no value is specified, the existence
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of the sysfs attribute is checked. This option can be specified multiple times.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--property-match=<replaceable>property</replaceable>=<replaceable>value</replaceable></option></term>
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<listitem>
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<para>Trigger events for devices with a matching property value. This option can be
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specified multiple times and supports shell style pattern matching.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--tag-match=<replaceable>property</replaceable></option></term>
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<listitem>
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<para>Trigger events for devices with a matching tag. This option can be
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specified multiple times.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--sysname-match=<replaceable>name</replaceable></option></term>
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<listitem>
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<para>Trigger events for devices with a matching sys device name. This option can be
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specified multiple times and supports shell style pattern matching.</para>
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</listitem>
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</varlistentry>
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2011-07-08 06:42:35 +08:00
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<varlistentry>
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<term><option>--parent-match=<replaceable>syspath</replaceable></option></term>
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<listitem>
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<para>Trigger events for all children of a given device.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect2>
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2007-11-09 00:51:59 +08:00
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2010-05-24 23:00:15 +08:00
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<refsect2><title>udevadm settle <optional>options</optional></title>
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<para>Watches the udev event queue, and exits if all current events are handled.</para>
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<variablelist>
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<varlistentry>
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<term><option>--timeout=<replaceable>seconds</replaceable></option></term>
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<listitem>
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<para>Maximum number of seconds to wait for the event queue to become empty.
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The default value is 120 seconds. A value of 0 will check if the queue is empty
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and always return immediately.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--seq-start=<replaceable>seqnum</replaceable></option></term>
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<listitem>
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<para>Wait only for events after the given sequence number.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--seq-end=<replaceable>seqnum</replaceable></option></term>
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<listitem>
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<para>Wait only for events before the given sequence number.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--exit-if-exists=<replaceable>file</replaceable></option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Stop waiting if file exists.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--quiet</option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Do not print any output, like the remaining queue entries when reaching the timeout.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--help</option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Print help text.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
</variablelist>
|
|
|
|
|
</refsect2>
|
2007-11-09 00:51:59 +08:00
|
|
|
|
2010-05-24 23:00:15 +08:00
|
|
|
<refsect2><title>udevadm control <replaceable>command</replaceable></title>
|
|
|
|
|
<para>Modify the internal state of the running udev daemon.</para>
|
|
|
|
|
<variablelist>
|
2011-04-13 07:17:09 +08:00
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--exit</option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Signal and wait for udevd to exit.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
2010-05-24 23:00:15 +08:00
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--log-priority=<replaceable>value</replaceable></option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Set the internal log level of udevd. Valid values are the numerical
|
|
|
|
|
syslog priorities or their textual representations: <option>err</option>,
|
|
|
|
|
<option>info</option> and <option>debug</option>.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--stop-exec-queue</option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Signal udevd to stop executing new events. Incoming events
|
|
|
|
|
will be queued.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--start-exec-queue</option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Signal udevd to enable the execution of events.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--reload-rules</option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Signal udevd to reload the rules files.
|
|
|
|
|
The udev daemon detects changes automatically, this option is
|
|
|
|
|
usually not needed. Reloading rules does not apply any changes
|
|
|
|
|
to already existing devices.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--property=<replaceable>KEY</replaceable>=<replaceable>value</replaceable></option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Set a global property for all events.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
<varlistentry>
|
2010-05-27 23:27:56 +08:00
|
|
|
<term><option>--children-max=</option><replaceable>value</replaceable></term>
|
2010-05-24 23:00:15 +08:00
|
|
|
<listitem>
|
|
|
|
|
<para>Set the maximum number of events, udevd will handle at the
|
|
|
|
|
same time.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
2011-04-13 07:17:09 +08:00
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--timeout=</option><replaceable>seconds</replaceable></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>The maximum number seonds to wait for a reply from udevd.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
2010-05-24 23:00:15 +08:00
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--help</option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Print help text.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
</variablelist>
|
|
|
|
|
</refsect2>
|
2007-11-09 00:51:59 +08:00
|
|
|
|
2010-05-24 23:00:15 +08:00
|
|
|
<refsect2><title>udevadm monitor <optional>options</optional></title>
|
|
|
|
|
<para>Listens to the kernel uevents and events sent out by a udev rule
|
|
|
|
|
and prints the devpath of the event to the console. It can be used to analyze the
|
|
|
|
|
event timing, by comparing the timestamps of the kernel uevent and the udev event.
|
|
|
|
|
</para>
|
|
|
|
|
<variablelist>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--kernel</option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Print the kernel uevents.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--udev</option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Print the udev event after the rule processing.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--property</option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Also print the properties of the event.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--subsystem-match=<replaceable>string[/string]</replaceable></option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Filter events by subsystem[/devtype]. Only udev events with a matching subsystem value will pass.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--tag-match=<replaceable>string</replaceable></option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Filter events by property. Only udev events with a given tag attached will pass.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--help</option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Print help text.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
</variablelist>
|
|
|
|
|
</refsect2>
|
2007-11-09 00:51:59 +08:00
|
|
|
|
2010-05-24 23:00:15 +08:00
|
|
|
<refsect2><title>udevadm test <optional>options</optional> <replaceable>devpath</replaceable></title>
|
|
|
|
|
<para>Simulate a udev event run for the given device, and print debug output.</para>
|
|
|
|
|
<variablelist>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--action=<replaceable>string</replaceable></option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>The action string.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--subsystem=<replaceable>string</replaceable></option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>The subsystem string.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--help</option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Print help text.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
</variablelist>
|
|
|
|
|
</refsect2>
|
2011-08-05 08:00:30 +08:00
|
|
|
|
|
|
|
|
<refsect2><title>udevadm test-builtin <optional>options</optional> <replaceable>command</replaceable> <replaceable>devpath</replaceable></title>
|
|
|
|
|
<para>Run a built-in command for the given device, and print debug output.</para>
|
|
|
|
|
<variablelist>
|
|
|
|
|
<varlistentry>
|
|
|
|
|
<term><option>--help</option></term>
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Print help text.</para>
|
|
|
|
|
</listitem>
|
|
|
|
|
</varlistentry>
|
|
|
|
|
</variablelist>
|
|
|
|
|
</refsect2>
|
2010-05-24 23:00:15 +08:00
|
|
|
</refsect1>
|
2007-11-09 00:51:59 +08:00
|
|
|
|
2010-05-24 23:00:15 +08:00
|
|
|
<refsect1><title>Author</title>
|
|
|
|
|
<para>Written by Kay Sievers <email>kay.sievers@vrfy.org</email>.</para>
|
|
|
|
|
</refsect1>
|
2007-11-09 00:51:59 +08:00
|
|
|
|
2010-05-24 23:00:15 +08:00
|
|
|
<refsect1>
|
|
|
|
|
<title>See Also</title>
|
|
|
|
|
<para><citerefentry>
|
|
|
|
|
<refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum>
|
|
|
|
|
</citerefentry>
|
|
|
|
|
<citerefentry>
|
|
|
|
|
<refentrytitle>udevd</refentrytitle><manvolnum>8</manvolnum>
|
|
|
|
|
</citerefentry></para>
|
|
|
|
|
</refsect1>
|
|
|
|
|
</refentry>
|
