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514094f9 | 1 | <?xml version='1.0'?> |
3a54a157 | 2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" |
12b42c76 | 3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> |
0307f791 | 4 | <!-- SPDX-License-Identifier: LGPL-2.1+ --> |
f48f7543 | 5 | |
c94c581c YW |
6 | <refentry id="udevadm" |
7 | xmlns:xi="http://www.w3.org/2001/XInclude"> | |
8 | ||
63749b1a | 9 | <refentryinfo> |
225cb03b | 10 | <title>udevadm</title> |
d3a2386d | 11 | <productname>systemd</productname> |
63749b1a | 12 | </refentryinfo> |
225cb03b | 13 | |
63749b1a KS |
14 | <refmeta> |
15 | <refentrytitle>udevadm</refentrytitle> | |
16 | <manvolnum>8</manvolnum> | |
63749b1a | 17 | </refmeta> |
225cb03b | 18 | |
63749b1a KS |
19 | <refnamediv> |
20 | <refname>udevadm</refname><refpurpose>udev management tool</refpurpose> | |
21 | </refnamediv> | |
225cb03b | 22 | |
63749b1a KS |
23 | <refsynopsisdiv> |
24 | <cmdsynopsis> | |
25 | <command>udevadm</command> | |
26 | <arg><option>--debug</option></arg> | |
27 | <arg><option>--version</option></arg> | |
28 | <arg><option>--help</option></arg> | |
29 | </cmdsynopsis> | |
30 | <cmdsynopsis> | |
c94c581c | 31 | <command>udevadm info <optional>options</optional> <optional>devpath</optional></command> |
63749b1a KS |
32 | </cmdsynopsis> |
33 | <cmdsynopsis> | |
c94c581c | 34 | <command>udevadm trigger <optional>options</optional> <optional>devpath</optional></command> |
63749b1a KS |
35 | </cmdsynopsis> |
36 | <cmdsynopsis> | |
37 | <command>udevadm settle <optional>options</optional></command> | |
38 | </cmdsynopsis> | |
39 | <cmdsynopsis> | |
c94c581c | 40 | <command>udevadm control <replaceable>option</replaceable></command> |
63749b1a KS |
41 | </cmdsynopsis> |
42 | <cmdsynopsis> | |
43 | <command>udevadm monitor <optional>options</optional></command> | |
44 | </cmdsynopsis> | |
45 | <cmdsynopsis> | |
46 | <command>udevadm test <optional>options</optional> <replaceable>devpath</replaceable></command> | |
47 | </cmdsynopsis> | |
d7867b31 KS |
48 | <cmdsynopsis> |
49 | <command>udevadm test-builtin <optional>options</optional> <replaceable>command</replaceable> <replaceable>devpath</replaceable></command> | |
50 | </cmdsynopsis> | |
63749b1a | 51 | </refsynopsisdiv> |
225cb03b | 52 | |
63749b1a | 53 | <refsect1><title>Description</title> |
124b48b0 ZJS |
54 | <para><command>udevadm</command> expects a command and command |
55 | specific options. It controls the runtime behavior of | |
56 | <command>systemd-udevd</command>, requests kernel events, manages | |
57 | the event queue, and provides simple debugging mechanisms.</para> | |
63749b1a | 58 | </refsect1> |
225cb03b | 59 | |
80877656 | 60 | <refsect1><title>Options</title> |
63749b1a KS |
61 | <variablelist> |
62 | <varlistentry> | |
c94c581c | 63 | <term><option>-d</option></term> |
63749b1a KS |
64 | <term><option>--debug</option></term> |
65 | <listitem> | |
35a44646 YW |
66 | <para>Print debug messages to standard error. This option is implied in <command>udevadm test</command> and |
67 | <command>udevadm test-builtin</command> commands.</para> | |
63749b1a KS |
68 | </listitem> |
69 | </varlistentry> | |
c94c581c | 70 | |
c94c581c | 71 | <xi:include href="standard-options.xml" xpointer="help" /> |
63749b1a | 72 | </variablelist> |
225cb03b | 73 | |
80877656 ZJS |
74 | <refsect2><title>udevadm info |
75 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
3c79311a | 76 | <arg choice="opt" rep="repeat"><replaceable>devpath</replaceable>|<replaceable>file</replaceable>|<replaceable>unit</replaceable></arg> |
80877656 ZJS |
77 | </title> |
78 | ||
b6854081 ZJS |
79 | <para>Query the udev database for device information.</para> |
80 | ||
3c79311a ZJS |
81 | <para>Positional arguments should be used to specify one or more devices. Each one may be a device name |
82 | (in which case it must start with <filename>/dev/</filename>), a sys path (in which case it must start | |
83 | with <filename>/sys/</filename>), or a systemd device unit name (in which case it must end with | |
b6854081 ZJS |
84 | <literal>.device</literal>, see |
85 | <citerefentry><refentrytitle>systemd.device</refentrytitle><manvolnum>5</manvolnum></citerefentry>). | |
86 | </para> | |
87 | ||
63749b1a KS |
88 | <variablelist> |
89 | <varlistentry> | |
7643ac9a ZJS |
90 | <term><option>-q</option></term> |
91 | <term><option>--query=<replaceable>TYPE</replaceable></option></term> | |
63749b1a | 92 | <listitem> |
b6854081 | 93 | <para>Query the database for the specified type of device data. |
7643ac9a ZJS |
94 | Valid <replaceable>TYPE</replaceable>s are: |
95 | <constant>name</constant>, <constant>symlink</constant>, | |
96 | <constant>path</constant>, <constant>property</constant>, | |
124b48b0 | 97 | <constant>all</constant>.</para> |
63749b1a KS |
98 | </listitem> |
99 | </varlistentry> | |
b6854081 | 100 | |
63749b1a | 101 | <varlistentry> |
7643ac9a ZJS |
102 | <term><option>-p</option></term> |
103 | <term><option>--path=<replaceable>DEVPATH</replaceable></option></term> | |
63749b1a | 104 | <listitem> |
b6854081 ZJS |
105 | <para>The <filename>/sys</filename> path of the device to query, e.g. |
106 | <filename><optional>/sys</optional>/class/block/sda</filename>. This option is an alternative to | |
107 | the positional argument with a <filename>/sys/</filename> prefix. <command>udevadm info | |
108 | --path=/class/block/sda</command> is equivalent to <command>udevadm info | |
109 | /sys/class/block/sda</command>.</para> | |
63749b1a KS |
110 | </listitem> |
111 | </varlistentry> | |
112 | <varlistentry> | |
7643ac9a ZJS |
113 | <term><option>-n</option></term> |
114 | <term><option>--name=<replaceable>FILE</replaceable></option></term> | |
63749b1a | 115 | <listitem> |
124b48b0 | 116 | <para>The name of the device node or a symlink to query, |
b6854081 ZJS |
117 | e.g. <filename><optional>/dev</optional>/sda</filename>. This option is an alternative to the |
118 | positional argument with a <filename>/dev/</filename> prefix. <command>udevadm info | |
119 | --name=sda</command> is equivalent to <command>udevadm info /dev/sda</command>.</para> | |
63749b1a KS |
120 | </listitem> |
121 | </varlistentry> | |
122 | <varlistentry> | |
7643ac9a | 123 | <term><option>-r</option></term> |
63749b1a KS |
124 | <term><option>--root</option></term> |
125 | <listitem> | |
4f5d327a KS |
126 | <para>Print absolute paths in <command>name</command> or <command>symlink</command> |
127 | query.</para> | |
4ec9c3e7 KS |
128 | </listitem> |
129 | </varlistentry> | |
63749b1a | 130 | <varlistentry> |
7643ac9a | 131 | <term><option>-a</option></term> |
63749b1a KS |
132 | <term><option>--attribute-walk</option></term> |
133 | <listitem> | |
134 | <para>Print all sysfs properties of the specified device that can be used | |
135 | in udev rules to match the specified device. It prints all devices | |
136 | along the chain, up to the root of sysfs that can be used in udev rules.</para> | |
137 | </listitem> | |
138 | </varlistentry> | |
dc1791a9 | 139 | <varlistentry> |
7643ac9a | 140 | <term><option>-x</option></term> |
dc1791a9 KS |
141 | <term><option>--export</option></term> |
142 | <listitem> | |
f0c29bbf YW |
143 | <para>Print output as key/value pairs. Values are enclosed in single quotes. |
144 | This takes effects only when <option>--query=property</option> or | |
145 | <option>--device-id-of-file=<replaceable>FILE</replaceable></option> is specified.</para> | |
dc1791a9 KS |
146 | </listitem> |
147 | </varlistentry> | |
148 | <varlistentry> | |
7643ac9a ZJS |
149 | <term><option>-P</option></term> |
150 | <term><option>--export-prefix=<replaceable>NAME</replaceable></option></term> | |
dc1791a9 | 151 | <listitem> |
f0c29bbf YW |
152 | <para>Add a prefix to the key name of exported values. |
153 | This implies <option>--export</option>.</para> | |
dc1791a9 KS |
154 | </listitem> |
155 | </varlistentry> | |
63749b1a | 156 | <varlistentry> |
7643ac9a ZJS |
157 | <term><option>-d</option></term> |
158 | <term><option>--device-id-of-file=<replaceable>FILE</replaceable></option></term> | |
63749b1a | 159 | <listitem> |
f0c29bbf YW |
160 | <para>Print major/minor numbers of the underlying device, where the file lives on. |
161 | If this is specified, all positional arguments are ignored.</para> | |
63749b1a KS |
162 | </listitem> |
163 | </varlistentry> | |
164 | <varlistentry> | |
7643ac9a | 165 | <term><option>-e</option></term> |
63749b1a KS |
166 | <term><option>--export-db</option></term> |
167 | <listitem> | |
168 | <para>Export the content of the udev database.</para> | |
169 | </listitem> | |
170 | </varlistentry> | |
9ead6627 | 171 | <varlistentry> |
7643ac9a | 172 | <term><option>-c</option></term> |
9ead6627 KS |
173 | <term><option>--cleanup-db</option></term> |
174 | <listitem> | |
175 | <para>Cleanup the udev database.</para> | |
176 | </listitem> | |
177 | </varlistentry> | |
ae760f4b YW |
178 | <varlistentry> |
179 | <term><option>-w<optional>SECONDS</optional></option></term> | |
180 | <term><option>--wait-for-initialization<optional>=SECONDS</optional></option></term> | |
181 | <listitem> | |
182 | <para>Wait for device to be initialized. If argument <replaceable>SECONDS</replaceable> | |
183 | is not specified, the default is to wait forever.</para> | |
184 | </listitem> | |
185 | </varlistentry> | |
c94c581c | 186 | |
c94c581c | 187 | <xi:include href="standard-options.xml" xpointer="help" /> |
63749b1a KS |
188 | </variablelist> |
189 | </refsect2> | |
225cb03b | 190 | |
80877656 ZJS |
191 | <refsect2><title>udevadm trigger |
192 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
a9bc94e5 | 193 | <arg choice="opt"><replaceable>devpath</replaceable>|<replaceable>file</replaceable>|<replaceable>unit</replaceable></arg> |
b6854081 | 194 | </title> |
63749b1a | 195 | <para>Request device events from the kernel. Primarily used to replay events at system coldplug time.</para> |
b6854081 | 196 | |
5b3b0733 | 197 | <para>Takes device specifications as positional arguments. See the description of <command>info</command> |
b6854081 ZJS |
198 | above.</para> |
199 | ||
63749b1a KS |
200 | <variablelist> |
201 | <varlistentry> | |
7643ac9a | 202 | <term><option>-v</option></term> |
63749b1a KS |
203 | <term><option>--verbose</option></term> |
204 | <listitem> | |
205 | <para>Print the list of devices which will be triggered.</para> | |
206 | </listitem> | |
207 | </varlistentry> | |
208 | <varlistentry> | |
7643ac9a | 209 | <term><option>-n</option></term> |
63749b1a KS |
210 | <term><option>--dry-run</option></term> |
211 | <listitem> | |
212 | <para>Do not actually trigger the event.</para> | |
213 | </listitem> | |
214 | </varlistentry> | |
215 | <varlistentry> | |
7643ac9a ZJS |
216 | <term><option>-t</option></term> |
217 | <term><option>--type=<replaceable>TYPE</replaceable></option></term> | |
63749b1a KS |
218 | <listitem> |
219 | <para>Trigger a specific type of devices. Valid types are: | |
864fde8a | 220 | <command>devices</command>, <command>subsystems</command>. |
63749b1a KS |
221 | The default value is <command>devices</command>.</para> |
222 | </listitem> | |
223 | </varlistentry> | |
224 | <varlistentry> | |
7643ac9a ZJS |
225 | <term><option>-c</option></term> |
226 | <term><option>--action=<replaceable>ACTION</replaceable></option></term> | |
63749b1a | 227 | <listitem> |
cd648ae1 YW |
228 | <para>Type of event to be triggered. Possible actions are <literal>add</literal>, |
229 | <literal>remove</literal>, <literal>change</literal>, <literal>move</literal>, | |
230 | <literal>online</literal>, <literal>offline</literal>, <literal>bind</literal>, | |
231 | and <literal>unbind</literal>. The default value is <literal>change</literal>.</para> | |
63749b1a KS |
232 | </listitem> |
233 | </varlistentry> | |
234 | <varlistentry> | |
7643ac9a ZJS |
235 | <term><option>-s</option></term> |
236 | <term><option>--subsystem-match=<replaceable>SUBSYSTEM</replaceable></option></term> | |
63749b1a | 237 | <listitem> |
7643ac9a | 238 | <para>Trigger events for devices which belong to a |
a9bc94e5 YW |
239 | matching subsystem. This option supports shell style pattern matching. |
240 | When this option is specified more than once, then each matching result is ORed, that is, | |
241 | all the devices in each subsystem are triggered.</para> | |
63749b1a KS |
242 | </listitem> |
243 | </varlistentry> | |
244 | <varlistentry> | |
7643ac9a ZJS |
245 | <term><option>-S</option></term> |
246 | <term><option>--subsystem-nomatch=<replaceable>SUBSYSTEM</replaceable></option></term> | |
63749b1a KS |
247 | <listitem> |
248 | <para>Do not trigger events for devices which belong to a matching subsystem. This option | |
a9bc94e5 YW |
249 | supports shell style pattern matching. When this option is specified more than once, |
250 | then each matching result is ANDed, that is, devices which do not match all specified | |
251 | subsystems are triggered.</para> | |
63749b1a KS |
252 | </listitem> |
253 | </varlistentry> | |
254 | <varlistentry> | |
7643ac9a ZJS |
255 | <term><option>-a</option></term> |
256 | <term><option>--attr-match=<replaceable>ATTRIBUTE</replaceable>=<replaceable>VALUE</replaceable></option></term> | |
63749b1a | 257 | <listitem> |
a9bc94e5 YW |
258 | <para>Trigger events for devices with a matching sysfs attribute. If a value is specified along |
259 | with the attribute name, the content of the attribute is matched against the given value using | |
260 | shell style pattern matching. If no value is specified, the existence of the sysfs attribute is | |
261 | checked. When this option is specified multiple times, then each matching result is ANDed, | |
262 | that is, only devices which have all specified attributes are triggered.</para> | |
63749b1a KS |
263 | </listitem> |
264 | </varlistentry> | |
265 | <varlistentry> | |
7643ac9a ZJS |
266 | <term><option>-A</option></term> |
267 | <term><option>--attr-nomatch=<replaceable>ATTRIBUTE</replaceable>=<replaceable>VALUE</replaceable></option></term> | |
63749b1a | 268 | <listitem> |
a9bc94e5 YW |
269 | <para>Do not trigger events for devices with a matching sysfs attribute. If a value is specified |
270 | along with the attribute name, the content of the attribute is matched against the given value | |
271 | using shell style pattern matching. If no value is specified, the existence of the sysfs attribute | |
272 | is checked. When this option is specified multiple times, then each matching result is ANDed, | |
273 | that is, only devices which have none of the specified attributes are triggered.</para> | |
63749b1a KS |
274 | </listitem> |
275 | </varlistentry> | |
276 | <varlistentry> | |
7643ac9a ZJS |
277 | <term><option>-p</option></term> |
278 | <term><option>--property-match=<replaceable>PROPERTY</replaceable>=<replaceable>VALUE</replaceable></option></term> | |
63749b1a | 279 | <listitem> |
a9bc94e5 YW |
280 | <para>Trigger events for devices with a matching property value. This option supports shell style |
281 | pattern matching. When this option is specified more than once, then each matching result is ORed, | |
282 | that is, devices which have one of the specified properties are triggered.</para> | |
63749b1a KS |
283 | </listitem> |
284 | </varlistentry> | |
285 | <varlistentry> | |
7643ac9a ZJS |
286 | <term><option>-g</option></term> |
287 | <term><option>--tag-match=<replaceable>PROPERTY</replaceable></option></term> | |
63749b1a | 288 | <listitem> |
a9bc94e5 YW |
289 | <para>Trigger events for devices with a matching tag. When this option is specified multiple times, |
290 | then each matching result is ANDed, that is, devices which have all specified tags are triggered.</para> | |
63749b1a KS |
291 | </listitem> |
292 | </varlistentry> | |
293 | <varlistentry> | |
7643ac9a | 294 | <term><option>-y</option></term> |
a9bc94e5 | 295 | <term><option>--sysname-match=<replaceable>NAME</replaceable></option></term> |
63749b1a | 296 | <listitem> |
a9bc94e5 YW |
297 | <para>Trigger events for devices for which the last component (i.e. the filename) of the |
298 | <filename>/sys</filename> path matches the specified <replaceable>PATH</replaceable>. This option | |
299 | supports shell style pattern matching. When this option is specified more than once, then each | |
300 | matching result is ORed, that is, all devices which have any of the specified | |
301 | <replaceable>NAME</replaceable> are triggered.</para> | |
63749b1a KS |
302 | </listitem> |
303 | </varlistentry> | |
80877656 ZJS |
304 | <varlistentry> |
305 | <term><option>--name-match=<replaceable>NAME</replaceable></option></term> | |
306 | <listitem> | |
a9bc94e5 | 307 | <para>Trigger events for devices with a matching device path. When this option is specified more than once, |
5b3b0733 | 308 | then each matching result is ORed, that is, all specified devices are triggered.</para> |
80877656 ZJS |
309 | </listitem> |
310 | </varlistentry> | |
b05211fa | 311 | <varlistentry> |
7643ac9a ZJS |
312 | <term><option>-b</option></term> |
313 | <term><option>--parent-match=<replaceable>SYSPATH</replaceable></option></term> | |
b05211fa | 314 | <listitem> |
a9bc94e5 | 315 | <para>Trigger events for all children of a given device. When this option is specified more than once, |
5b3b0733 | 316 | then each matching result is ORed, that is, all children of each specified device are triggered.</para> |
7643ac9a | 317 | </listitem> |
792cc203 MH |
318 | </varlistentry> |
319 | <varlistentry> | |
320 | <term><option>-w</option></term> | |
321 | <term><option>--settle</option></term> | |
322 | <listitem> | |
323 | <para>Apart from triggering events, also waits for those events to | |
324 | finish. Note that this is different from calling <command>udevadm | |
325 | settle</command>. <command>udevadm settle</command> waits for all | |
326 | events to finish. This option only waits for events triggered by | |
327 | the same command to finish.</para> | |
328 | </listitem> | |
7643ac9a | 329 | </varlistentry> |
2001622c YW |
330 | <varlistentry> |
331 | <term><option>--wait-daemon[=<replaceable>SECONDS</replaceable>]</option></term> | |
332 | <listitem> | |
333 | <para>Before triggering uevents, wait for systemd-udevd daemon to be initialized. | |
334 | Optionally takes timeout value. Default timeout is 5 seconds. This is equivalent to invoke | |
335 | invoking <command>udevadm control --ping</command> before <command>udevadm trigger</command>.</para> | |
336 | </listitem> | |
337 | </varlistentry> | |
c94c581c | 338 | |
c94c581c | 339 | <xi:include href="standard-options.xml" xpointer="help" /> |
63749b1a | 340 | </variablelist> |
80877656 | 341 | |
5b3b0733 YW |
342 | <para>In addition, optional positional arguments can be used |
343 | to specify device names or sys paths. They must start with | |
80877656 ZJS |
344 | <filename>/dev</filename> or <filename>/sys</filename> |
345 | respectively.</para> | |
63749b1a | 346 | </refsect2> |
225cb03b | 347 | |
80877656 ZJS |
348 | <refsect2><title>udevadm settle |
349 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
350 | </title> | |
63749b1a KS |
351 | <para>Watches the udev event queue, and exits if all current events are handled.</para> |
352 | <variablelist> | |
353 | <varlistentry> | |
7643ac9a ZJS |
354 | <term><option>-t</option></term> |
355 | <term><option>--timeout=<replaceable>SECONDS</replaceable></option></term> | |
63749b1a | 356 | <listitem> |
7643ac9a ZJS |
357 | <para>Maximum number of seconds to wait for the event |
358 | queue to become empty. The default value is 120 seconds. A | |
359 | value of 0 will check if the queue is empty and always | |
360 | return immediately.</para> | |
63749b1a KS |
361 | </listitem> |
362 | </varlistentry> | |
63749b1a | 363 | <varlistentry> |
7643ac9a ZJS |
364 | <term><option>-E</option></term> |
365 | <term><option>--exit-if-exists=<replaceable>FILE</replaceable></option></term> | |
63749b1a KS |
366 | <listitem> |
367 | <para>Stop waiting if file exists.</para> | |
368 | </listitem> | |
369 | </varlistentry> | |
c94c581c | 370 | |
c94c581c | 371 | <xi:include href="standard-options.xml" xpointer="help" /> |
63749b1a | 372 | </variablelist> |
18a38822 ZJS |
373 | |
374 | <para>See | |
375 | <citerefentry><refentrytitle>systemd-udev-settle.service</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
376 | for more information.</para> | |
63749b1a | 377 | </refsect2> |
225cb03b | 378 | |
c94c581c | 379 | <refsect2><title>udevadm control <replaceable>option</replaceable></title> |
63749b1a KS |
380 | <para>Modify the internal state of the running udev daemon.</para> |
381 | <variablelist> | |
ff2c503d | 382 | <varlistentry> |
bd8420c5 | 383 | <term><option>-e</option></term> |
ff2c503d KS |
384 | <term><option>--exit</option></term> |
385 | <listitem> | |
6371db93 YW |
386 | <para>Signal and wait for systemd-udevd to exit. No option except for |
387 | <option>--timeout</option> can be specified after this option. | |
388 | Note that <filename>systemd-udevd.service</filename> contains | |
389 | <option>Restart=always</option> and so as a result, this option restarts systemd-udevd. | |
d0d7e102 YW |
390 | If you want to stop <filename>systemd-udevd.service</filename>, please use the following: |
391 | <programlisting>systemctl stop systemd-udevd-control.socket systemd-udevd-kernel.socket systemd-udevd.service</programlisting> | |
392 | </para> | |
ff2c503d KS |
393 | </listitem> |
394 | </varlistentry> | |
63749b1a | 395 | <varlistentry> |
7643ac9a | 396 | <term><option>-l</option></term> |
63749b1a KS |
397 | <term><option>--log-priority=<replaceable>value</replaceable></option></term> |
398 | <listitem> | |
e03234a1 ZJS |
399 | <para>Set the internal log level of |
400 | <filename>systemd-udevd</filename>. Valid values are the | |
401 | numerical syslog priorities or their textual | |
402 | representations: <option>emerg</option>, | |
403 | <option>alert</option>, <option>crit</option>, | |
404 | <option>err</option>, <option>warning</option>, | |
405 | <option>notice</option>, <option>info</option>, and | |
406 | <option>debug</option>.</para> | |
63749b1a KS |
407 | </listitem> |
408 | </varlistentry> | |
409 | <varlistentry> | |
7643ac9a | 410 | <term><option>-s</option></term> |
63749b1a KS |
411 | <term><option>--stop-exec-queue</option></term> |
412 | <listitem> | |
f13b388f | 413 | <para>Signal systemd-udevd to stop executing new events. Incoming events |
63749b1a KS |
414 | will be queued.</para> |
415 | </listitem> | |
416 | </varlistentry> | |
417 | <varlistentry> | |
7643ac9a | 418 | <term><option>-S</option></term> |
63749b1a KS |
419 | <term><option>--start-exec-queue</option></term> |
420 | <listitem> | |
f13b388f | 421 | <para>Signal systemd-udevd to enable the execution of events.</para> |
63749b1a KS |
422 | </listitem> |
423 | </varlistentry> | |
424 | <varlistentry> | |
7643ac9a | 425 | <term><option>-R</option></term> |
7c85d636 | 426 | <term><option>--reload</option></term> |
63749b1a | 427 | <listitem> |
f13b388f | 428 | <para>Signal systemd-udevd to reload the rules files and other databases like the kernel |
7c85d636 KS |
429 | module index. Reloading rules and databases does not apply any changes to already |
430 | existing devices; the new configuration will only be applied to new events.</para> | |
63749b1a KS |
431 | </listitem> |
432 | </varlistentry> | |
433 | <varlistentry> | |
7643ac9a | 434 | <term><option>-p</option></term> |
63749b1a KS |
435 | <term><option>--property=<replaceable>KEY</replaceable>=<replaceable>value</replaceable></option></term> |
436 | <listitem> | |
437 | <para>Set a global property for all events.</para> | |
438 | </listitem> | |
439 | </varlistentry> | |
440 | <varlistentry> | |
7643ac9a | 441 | <term><option>-m</option></term> |
87d55ff6 | 442 | <term><option>--children-max=</option><replaceable>value</replaceable></term> |
63749b1a | 443 | <listitem> |
f13b388f | 444 | <para>Set the maximum number of events, systemd-udevd will handle at the |
63749b1a KS |
445 | same time.</para> |
446 | </listitem> | |
447 | </varlistentry> | |
a82340cc YW |
448 | <varlistentry> |
449 | <term><option>--ping</option></term> | |
450 | <listitem> | |
451 | <para>Send a ping message to systemd-udevd and wait for the reply. This may be useful to check that | |
452 | systemd-udevd daemon is running.</para> | |
453 | </listitem> | |
454 | </varlistentry> | |
ff2c503d | 455 | <varlistentry> |
c94c581c | 456 | <term><option>-t</option></term> |
ff2c503d KS |
457 | <term><option>--timeout=</option><replaceable>seconds</replaceable></term> |
458 | <listitem> | |
7e505069 | 459 | <para>The maximum number of seconds to wait for a reply from systemd-udevd.</para> |
ff2c503d KS |
460 | </listitem> |
461 | </varlistentry> | |
c94c581c | 462 | |
c94c581c | 463 | <xi:include href="standard-options.xml" xpointer="help" /> |
63749b1a KS |
464 | </variablelist> |
465 | </refsect2> | |
225cb03b | 466 | |
80877656 ZJS |
467 | <refsect2><title>udevadm monitor |
468 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
469 | </title> | |
63749b1a KS |
470 | <para>Listens to the kernel uevents and events sent out by a udev rule |
471 | and prints the devpath of the event to the console. It can be used to analyze the | |
472 | event timing, by comparing the timestamps of the kernel uevent and the udev event. | |
473 | </para> | |
474 | <variablelist> | |
475 | <varlistentry> | |
7643ac9a | 476 | <term><option>-k</option></term> |
63749b1a KS |
477 | <term><option>--kernel</option></term> |
478 | <listitem> | |
479 | <para>Print the kernel uevents.</para> | |
480 | </listitem> | |
481 | </varlistentry> | |
482 | <varlistentry> | |
7643ac9a | 483 | <term><option>-u</option></term> |
63749b1a KS |
484 | <term><option>--udev</option></term> |
485 | <listitem> | |
486 | <para>Print the udev event after the rule processing.</para> | |
487 | </listitem> | |
488 | </varlistentry> | |
489 | <varlistentry> | |
7643ac9a | 490 | <term><option>-p</option></term> |
63749b1a KS |
491 | <term><option>--property</option></term> |
492 | <listitem> | |
493 | <para>Also print the properties of the event.</para> | |
494 | </listitem> | |
495 | </varlistentry> | |
496 | <varlistentry> | |
7643ac9a | 497 | <term><option>-s</option></term> |
63749b1a KS |
498 | <term><option>--subsystem-match=<replaceable>string[/string]</replaceable></option></term> |
499 | <listitem> | |
a9bc94e5 YW |
500 | <para>Filter kernel uevents and udev events by subsystem[/devtype]. Only events with a matching subsystem value will pass. |
501 | When this option is specified more than once, then each matching result is ORed, that is, all devices in the specified | |
502 | subsystems are monitored.</para> | |
63749b1a KS |
503 | </listitem> |
504 | </varlistentry> | |
505 | <varlistentry> | |
7643ac9a | 506 | <term><option>-t</option></term> |
63749b1a KS |
507 | <term><option>--tag-match=<replaceable>string</replaceable></option></term> |
508 | <listitem> | |
a9bc94e5 YW |
509 | <para>Filter udev events by tag. Only udev events with a given tag attached will pass. |
510 | When this option is specified more than once, then each matching result is ORed, that is, devices which have one of the | |
511 | specified tags are monitored.</para> | |
63749b1a KS |
512 | </listitem> |
513 | </varlistentry> | |
c94c581c | 514 | |
c94c581c | 515 | <xi:include href="standard-options.xml" xpointer="help" /> |
63749b1a KS |
516 | </variablelist> |
517 | </refsect2> | |
225cb03b | 518 | |
80877656 ZJS |
519 | <refsect2><title>udevadm test |
520 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
521 | <arg><replaceable>devpath</replaceable></arg> | |
522 | </title> | |
63749b1a KS |
523 | <para>Simulate a udev event run for the given device, and print debug output.</para> |
524 | <variablelist> | |
525 | <varlistentry> | |
7643ac9a | 526 | <term><option>-a</option></term> |
63749b1a KS |
527 | <term><option>--action=<replaceable>string</replaceable></option></term> |
528 | <listitem> | |
529 | <para>The action string.</para> | |
530 | </listitem> | |
531 | </varlistentry> | |
532 | <varlistentry> | |
7643ac9a | 533 | <term><option>-N</option></term> |
124b48b0 | 534 | <term><option>--resolve-names=<constant>early</constant>|<constant>late</constant>|<constant>never</constant></option></term> |
63749b1a | 535 | <listitem> |
124b48b0 ZJS |
536 | <para>Specify when udevadm should resolve names of users |
537 | and groups. When set to <constant>early</constant> (the | |
72f4d966 JE |
538 | default), names will be resolved when the rules are |
539 | parsed. When set to <constant>late</constant>, names will | |
124b48b0 | 540 | be resolved for every event. When set to |
72f4d966 | 541 | <constant>never</constant>, names will never be resolved |
124b48b0 | 542 | and all devices will be owned by root.</para> |
63749b1a KS |
543 | </listitem> |
544 | </varlistentry> | |
c94c581c | 545 | |
c94c581c | 546 | <xi:include href="standard-options.xml" xpointer="help" /> |
63749b1a KS |
547 | </variablelist> |
548 | </refsect2> | |
d7867b31 | 549 | |
80877656 ZJS |
550 | <refsect2><title>udevadm test-builtin |
551 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
552 | <arg><replaceable>command</replaceable></arg> | |
553 | <arg><replaceable>devpath</replaceable></arg> | |
554 | </title> | |
7643ac9a ZJS |
555 | <para>Run a built-in command <replaceable>COMMAND</replaceable> |
556 | for device <replaceable>DEVPATH</replaceable>, and print debug | |
557 | output.</para> | |
d7867b31 | 558 | <variablelist> |
c94c581c | 559 | <xi:include href="standard-options.xml" xpointer="help" /> |
d7867b31 KS |
560 | </variablelist> |
561 | </refsect2> | |
63749b1a | 562 | </refsect1> |
225cb03b | 563 | |
63749b1a KS |
564 | <refsect1> |
565 | <title>See Also</title> | |
566 | <para><citerefentry> | |
567 | <refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum> | |
7d06ef0a | 568 | </citerefentry>, |
63749b1a | 569 | <citerefentry> |
b79f817b | 570 | <refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum> |
63749b1a KS |
571 | </citerefentry></para> |
572 | </refsect1> | |
573 | </refentry> |