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3802a3d3 | 1 | <?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*--> |
63749b1a | 2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" |
12b42c76 | 3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> |
225cb03b | 4 | |
f48f7543 ZJS |
5 | <!-- |
6 | SPDX-License-Identifier: LGPL-2.1+ | |
7 | ||
8 | This file is part of systemd. | |
9 | ||
10 | Copyright 2010-2013 Kay Sievers | |
11 | ||
12 | systemd is free software; you can redistribute it and/or modify it | |
13 | under the terms of the GNU Lesser General Public License as published by | |
14 | the Free Software Foundation; either version 2.1 of the License, or | |
15 | (at your option) any later version. | |
16 | ||
17 | systemd is distributed in the hope that it will be useful, but | |
18 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | Lesser General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU Lesser General Public License | |
23 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
24 | --> | |
25 | ||
c94c581c YW |
26 | <refentry id="udevadm" |
27 | xmlns:xi="http://www.w3.org/2001/XInclude"> | |
28 | ||
63749b1a | 29 | <refentryinfo> |
225cb03b | 30 | <title>udevadm</title> |
d3a2386d KS |
31 | <productname>systemd</productname> |
32 | <authorgroup> | |
33 | <author> | |
34 | <contrib>Developer</contrib> | |
35 | <firstname>Kay</firstname> | |
36 | <surname>Sievers</surname> | |
37 | <email>kay@vrfy.org</email> | |
38 | </author> | |
39 | </authorgroup> | |
63749b1a | 40 | </refentryinfo> |
225cb03b | 41 | |
63749b1a KS |
42 | <refmeta> |
43 | <refentrytitle>udevadm</refentrytitle> | |
44 | <manvolnum>8</manvolnum> | |
63749b1a | 45 | </refmeta> |
225cb03b | 46 | |
63749b1a KS |
47 | <refnamediv> |
48 | <refname>udevadm</refname><refpurpose>udev management tool</refpurpose> | |
49 | </refnamediv> | |
225cb03b | 50 | |
63749b1a KS |
51 | <refsynopsisdiv> |
52 | <cmdsynopsis> | |
53 | <command>udevadm</command> | |
54 | <arg><option>--debug</option></arg> | |
55 | <arg><option>--version</option></arg> | |
56 | <arg><option>--help</option></arg> | |
57 | </cmdsynopsis> | |
58 | <cmdsynopsis> | |
c94c581c | 59 | <command>udevadm info <optional>options</optional> <optional>devpath</optional></command> |
63749b1a KS |
60 | </cmdsynopsis> |
61 | <cmdsynopsis> | |
c94c581c | 62 | <command>udevadm trigger <optional>options</optional> <optional>devpath</optional></command> |
63749b1a KS |
63 | </cmdsynopsis> |
64 | <cmdsynopsis> | |
65 | <command>udevadm settle <optional>options</optional></command> | |
66 | </cmdsynopsis> | |
67 | <cmdsynopsis> | |
c94c581c | 68 | <command>udevadm control <replaceable>option</replaceable></command> |
63749b1a KS |
69 | </cmdsynopsis> |
70 | <cmdsynopsis> | |
71 | <command>udevadm monitor <optional>options</optional></command> | |
72 | </cmdsynopsis> | |
73 | <cmdsynopsis> | |
74 | <command>udevadm test <optional>options</optional> <replaceable>devpath</replaceable></command> | |
75 | </cmdsynopsis> | |
d7867b31 KS |
76 | <cmdsynopsis> |
77 | <command>udevadm test-builtin <optional>options</optional> <replaceable>command</replaceable> <replaceable>devpath</replaceable></command> | |
78 | </cmdsynopsis> | |
63749b1a | 79 | </refsynopsisdiv> |
225cb03b | 80 | |
63749b1a | 81 | <refsect1><title>Description</title> |
124b48b0 ZJS |
82 | <para><command>udevadm</command> expects a command and command |
83 | specific options. It controls the runtime behavior of | |
84 | <command>systemd-udevd</command>, requests kernel events, manages | |
85 | the event queue, and provides simple debugging mechanisms.</para> | |
63749b1a | 86 | </refsect1> |
225cb03b | 87 | |
80877656 | 88 | <refsect1><title>Options</title> |
63749b1a KS |
89 | <variablelist> |
90 | <varlistentry> | |
c94c581c | 91 | <term><option>-d</option></term> |
63749b1a KS |
92 | <term><option>--debug</option></term> |
93 | <listitem> | |
6db27428 | 94 | <para>Print debug messages to standard error.</para> |
63749b1a KS |
95 | </listitem> |
96 | </varlistentry> | |
c94c581c | 97 | |
c94c581c | 98 | <xi:include href="standard-options.xml" xpointer="help" /> |
63749b1a | 99 | </variablelist> |
225cb03b | 100 | |
80877656 ZJS |
101 | <refsect2><title>udevadm info |
102 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
103 | <arg choice="opt"><replaceable>devpath</replaceable>|<replaceable>file</replaceable></arg> | |
104 | </title> | |
105 | ||
63749b1a KS |
106 | <para>Queries the udev database for device information |
107 | stored in the udev database. It can also query the properties | |
108 | of a device from its sysfs representation to help creating udev | |
109 | rules that match this device.</para> | |
110 | <variablelist> | |
111 | <varlistentry> | |
7643ac9a ZJS |
112 | <term><option>-q</option></term> |
113 | <term><option>--query=<replaceable>TYPE</replaceable></option></term> | |
63749b1a | 114 | <listitem> |
72f4d966 | 115 | <para>Query the database for the specified type of device |
124b48b0 | 116 | data. It needs the <option>--path</option> or |
7643ac9a ZJS |
117 | <option>--name</option> to identify the specified device. |
118 | Valid <replaceable>TYPE</replaceable>s are: | |
119 | <constant>name</constant>, <constant>symlink</constant>, | |
120 | <constant>path</constant>, <constant>property</constant>, | |
124b48b0 | 121 | <constant>all</constant>.</para> |
63749b1a KS |
122 | </listitem> |
123 | </varlistentry> | |
124 | <varlistentry> | |
7643ac9a ZJS |
125 | <term><option>-p</option></term> |
126 | <term><option>--path=<replaceable>DEVPATH</replaceable></option></term> | |
63749b1a | 127 | <listitem> |
124b48b0 ZJS |
128 | <para>The <filename>/sys</filename> path of the device to |
129 | query, e.g. | |
130 | <filename><optional>/sys</optional>/class/block/sda</filename>. | |
72f4d966 | 131 | Note that this option usually is not very useful, since |
124b48b0 ZJS |
132 | <command>udev</command> can guess the type of the |
133 | argument, so <command>udevadm | |
134 | --devpath=/class/block/sda</command> is equivalent to | |
135 | <command>udevadm /sys/class/block/sda</command>.</para> | |
63749b1a KS |
136 | </listitem> |
137 | </varlistentry> | |
138 | <varlistentry> | |
7643ac9a ZJS |
139 | <term><option>-n</option></term> |
140 | <term><option>--name=<replaceable>FILE</replaceable></option></term> | |
63749b1a | 141 | <listitem> |
124b48b0 ZJS |
142 | <para>The name of the device node or a symlink to query, |
143 | e.g. <filename><optional>/dev</optional>/sda</filename>. | |
72f4d966 | 144 | Note that this option usually is not very useful, since |
124b48b0 ZJS |
145 | <command>udev</command> can guess the type of the |
146 | argument, so <command>udevadm --name=sda</command> is | |
147 | equivalent to <command>udevadm /dev/sda</command>.</para> | |
63749b1a KS |
148 | </listitem> |
149 | </varlistentry> | |
150 | <varlistentry> | |
7643ac9a | 151 | <term><option>-r</option></term> |
63749b1a KS |
152 | <term><option>--root</option></term> |
153 | <listitem> | |
4f5d327a KS |
154 | <para>Print absolute paths in <command>name</command> or <command>symlink</command> |
155 | query.</para> | |
4ec9c3e7 KS |
156 | </listitem> |
157 | </varlistentry> | |
63749b1a | 158 | <varlistentry> |
7643ac9a | 159 | <term><option>-a</option></term> |
63749b1a KS |
160 | <term><option>--attribute-walk</option></term> |
161 | <listitem> | |
162 | <para>Print all sysfs properties of the specified device that can be used | |
163 | in udev rules to match the specified device. It prints all devices | |
164 | along the chain, up to the root of sysfs that can be used in udev rules.</para> | |
165 | </listitem> | |
166 | </varlistentry> | |
dc1791a9 | 167 | <varlistentry> |
7643ac9a | 168 | <term><option>-x</option></term> |
dc1791a9 KS |
169 | <term><option>--export</option></term> |
170 | <listitem> | |
171 | <para>Print output as key/value pairs. Values are enclosed in single quotes.</para> | |
172 | </listitem> | |
173 | </varlistentry> | |
174 | <varlistentry> | |
7643ac9a ZJS |
175 | <term><option>-P</option></term> |
176 | <term><option>--export-prefix=<replaceable>NAME</replaceable></option></term> | |
dc1791a9 KS |
177 | <listitem> |
178 | <para>Add a prefix to the key name of exported values.</para> | |
179 | </listitem> | |
180 | </varlistentry> | |
63749b1a | 181 | <varlistentry> |
7643ac9a ZJS |
182 | <term><option>-d</option></term> |
183 | <term><option>--device-id-of-file=<replaceable>FILE</replaceable></option></term> | |
63749b1a KS |
184 | <listitem> |
185 | <para>Print major/minor numbers of the underlying device, where the file | |
186 | lives on.</para> | |
187 | </listitem> | |
188 | </varlistentry> | |
189 | <varlistentry> | |
7643ac9a | 190 | <term><option>-e</option></term> |
63749b1a KS |
191 | <term><option>--export-db</option></term> |
192 | <listitem> | |
193 | <para>Export the content of the udev database.</para> | |
194 | </listitem> | |
195 | </varlistentry> | |
9ead6627 | 196 | <varlistentry> |
7643ac9a | 197 | <term><option>-c</option></term> |
9ead6627 KS |
198 | <term><option>--cleanup-db</option></term> |
199 | <listitem> | |
200 | <para>Cleanup the udev database.</para> | |
201 | </listitem> | |
202 | </varlistentry> | |
c94c581c | 203 | |
c94c581c | 204 | <xi:include href="standard-options.xml" xpointer="help" /> |
63749b1a | 205 | </variablelist> |
80877656 | 206 | |
b938cb90 | 207 | <para>In addition, an optional positional argument can be used |
80877656 ZJS |
208 | to specify a device name or a sys path. It must start with |
209 | <filename>/dev</filename> or <filename>/sys</filename> | |
210 | respectively.</para> | |
63749b1a | 211 | </refsect2> |
225cb03b | 212 | |
80877656 ZJS |
213 | <refsect2><title>udevadm trigger |
214 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
215 | <arg choice="opt" rep="repeat"><replaceable>devpath</replaceable>|<replaceable>file</replaceable></arg></title> | |
63749b1a KS |
216 | <para>Request device events from the kernel. Primarily used to replay events at system coldplug time.</para> |
217 | <variablelist> | |
218 | <varlistentry> | |
7643ac9a | 219 | <term><option>-v</option></term> |
63749b1a KS |
220 | <term><option>--verbose</option></term> |
221 | <listitem> | |
222 | <para>Print the list of devices which will be triggered.</para> | |
223 | </listitem> | |
224 | </varlistentry> | |
225 | <varlistentry> | |
7643ac9a | 226 | <term><option>-n</option></term> |
63749b1a KS |
227 | <term><option>--dry-run</option></term> |
228 | <listitem> | |
229 | <para>Do not actually trigger the event.</para> | |
230 | </listitem> | |
231 | </varlistentry> | |
232 | <varlistentry> | |
7643ac9a ZJS |
233 | <term><option>-t</option></term> |
234 | <term><option>--type=<replaceable>TYPE</replaceable></option></term> | |
63749b1a KS |
235 | <listitem> |
236 | <para>Trigger a specific type of devices. Valid types are: | |
864fde8a | 237 | <command>devices</command>, <command>subsystems</command>. |
63749b1a KS |
238 | The default value is <command>devices</command>.</para> |
239 | </listitem> | |
240 | </varlistentry> | |
241 | <varlistentry> | |
7643ac9a ZJS |
242 | <term><option>-c</option></term> |
243 | <term><option>--action=<replaceable>ACTION</replaceable></option></term> | |
63749b1a | 244 | <listitem> |
7643ac9a ZJS |
245 | <para>Type of event to be triggered. The default value is |
246 | <command>change</command>.</para> | |
63749b1a KS |
247 | </listitem> |
248 | </varlistentry> | |
249 | <varlistentry> | |
7643ac9a ZJS |
250 | <term><option>-s</option></term> |
251 | <term><option>--subsystem-match=<replaceable>SUBSYSTEM</replaceable></option></term> | |
63749b1a | 252 | <listitem> |
7643ac9a ZJS |
253 | <para>Trigger events for devices which belong to a |
254 | matching subsystem. This option can be specified multiple | |
255 | times and supports shell style pattern matching.</para> | |
63749b1a KS |
256 | </listitem> |
257 | </varlistentry> | |
258 | <varlistentry> | |
7643ac9a ZJS |
259 | <term><option>-S</option></term> |
260 | <term><option>--subsystem-nomatch=<replaceable>SUBSYSTEM</replaceable></option></term> | |
63749b1a KS |
261 | <listitem> |
262 | <para>Do not trigger events for devices which belong to a matching subsystem. This option | |
263 | can be specified multiple times and supports shell style pattern matching.</para> | |
264 | </listitem> | |
265 | </varlistentry> | |
266 | <varlistentry> | |
7643ac9a ZJS |
267 | <term><option>-a</option></term> |
268 | <term><option>--attr-match=<replaceable>ATTRIBUTE</replaceable>=<replaceable>VALUE</replaceable></option></term> | |
63749b1a | 269 | <listitem> |
7643ac9a ZJS |
270 | <para>Trigger events for devices with a matching sysfs |
271 | attribute. If a value is specified along with the | |
272 | attribute name, the content of the attribute is matched | |
273 | against the given value using shell style pattern | |
274 | matching. If no value is specified, the existence of the | |
275 | sysfs attribute is checked. This option can be specified | |
276 | multiple times.</para> | |
63749b1a KS |
277 | </listitem> |
278 | </varlistentry> | |
279 | <varlistentry> | |
7643ac9a ZJS |
280 | <term><option>-A</option></term> |
281 | <term><option>--attr-nomatch=<replaceable>ATTRIBUTE</replaceable>=<replaceable>VALUE</replaceable></option></term> | |
63749b1a | 282 | <listitem> |
7643ac9a ZJS |
283 | <para>Do not trigger events for devices with a matching |
284 | sysfs attribute. If a value is specified along with the | |
285 | attribute name, the content of the attribute is matched | |
286 | against the given value using shell style pattern | |
287 | matching. If no value is specified, the existence of the | |
288 | sysfs attribute is checked. This option can be specified | |
289 | multiple times.</para> | |
63749b1a KS |
290 | </listitem> |
291 | </varlistentry> | |
292 | <varlistentry> | |
7643ac9a ZJS |
293 | <term><option>-p</option></term> |
294 | <term><option>--property-match=<replaceable>PROPERTY</replaceable>=<replaceable>VALUE</replaceable></option></term> | |
63749b1a | 295 | <listitem> |
7643ac9a ZJS |
296 | <para>Trigger events for devices with a matching property |
297 | value. This option can be specified multiple times and | |
298 | supports shell style pattern matching.</para> | |
63749b1a KS |
299 | </listitem> |
300 | </varlistentry> | |
301 | <varlistentry> | |
7643ac9a ZJS |
302 | <term><option>-g</option></term> |
303 | <term><option>--tag-match=<replaceable>PROPERTY</replaceable></option></term> | |
63749b1a | 304 | <listitem> |
7643ac9a ZJS |
305 | <para>Trigger events for devices with a matching tag. This |
306 | option can be specified multiple times.</para> | |
63749b1a KS |
307 | </listitem> |
308 | </varlistentry> | |
309 | <varlistentry> | |
7643ac9a | 310 | <term><option>-y</option></term> |
80877656 | 311 | <term><option>--sysname-match=<replaceable>PATH</replaceable></option></term> |
63749b1a | 312 | <listitem> |
cd9363b1 RS |
313 | <para>Trigger events for devices for which the last component |
314 | (i.e. the filename) of the <filename>/sys</filename> path matches | |
315 | the specified <replaceable>PATH</replaceable>. This option can be | |
316 | specified multiple times and also supports shell style pattern | |
317 | matching.</para> | |
63749b1a KS |
318 | </listitem> |
319 | </varlistentry> | |
80877656 ZJS |
320 | <varlistentry> |
321 | <term><option>--name-match=<replaceable>NAME</replaceable></option></term> | |
322 | <listitem> | |
323 | <para>Trigger events for devices with a matching | |
a8eaaee7 | 324 | device path. This option can be specified multiple |
80877656 ZJS |
325 | times.</para> |
326 | </listitem> | |
327 | </varlistentry> | |
b05211fa | 328 | <varlistentry> |
7643ac9a ZJS |
329 | <term><option>-b</option></term> |
330 | <term><option>--parent-match=<replaceable>SYSPATH</replaceable></option></term> | |
b05211fa | 331 | <listitem> |
7643ac9a ZJS |
332 | <para>Trigger events for all children of a given |
333 | device.</para> | |
334 | </listitem> | |
792cc203 MH |
335 | </varlistentry> |
336 | <varlistentry> | |
337 | <term><option>-w</option></term> | |
338 | <term><option>--settle</option></term> | |
339 | <listitem> | |
340 | <para>Apart from triggering events, also waits for those events to | |
341 | finish. Note that this is different from calling <command>udevadm | |
342 | settle</command>. <command>udevadm settle</command> waits for all | |
343 | events to finish. This option only waits for events triggered by | |
344 | the same command to finish.</para> | |
345 | </listitem> | |
7643ac9a | 346 | </varlistentry> |
c94c581c | 347 | |
c94c581c | 348 | <xi:include href="standard-options.xml" xpointer="help" /> |
63749b1a | 349 | </variablelist> |
80877656 | 350 | |
b938cb90 | 351 | <para>In addition, optional positional arguments can be used |
80877656 ZJS |
352 | to specify device names or sys paths. They must start with |
353 | <filename>/dev</filename> or <filename>/sys</filename> | |
354 | respectively.</para> | |
63749b1a | 355 | </refsect2> |
225cb03b | 356 | |
80877656 ZJS |
357 | <refsect2><title>udevadm settle |
358 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
359 | </title> | |
63749b1a KS |
360 | <para>Watches the udev event queue, and exits if all current events are handled.</para> |
361 | <variablelist> | |
362 | <varlistentry> | |
7643ac9a ZJS |
363 | <term><option>-t</option></term> |
364 | <term><option>--timeout=<replaceable>SECONDS</replaceable></option></term> | |
63749b1a | 365 | <listitem> |
7643ac9a ZJS |
366 | <para>Maximum number of seconds to wait for the event |
367 | queue to become empty. The default value is 120 seconds. A | |
368 | value of 0 will check if the queue is empty and always | |
369 | return immediately.</para> | |
63749b1a KS |
370 | </listitem> |
371 | </varlistentry> | |
63749b1a | 372 | <varlistentry> |
7643ac9a ZJS |
373 | <term><option>-E</option></term> |
374 | <term><option>--exit-if-exists=<replaceable>FILE</replaceable></option></term> | |
63749b1a KS |
375 | <listitem> |
376 | <para>Stop waiting if file exists.</para> | |
377 | </listitem> | |
378 | </varlistentry> | |
c94c581c | 379 | |
c94c581c | 380 | <xi:include href="standard-options.xml" xpointer="help" /> |
63749b1a KS |
381 | </variablelist> |
382 | </refsect2> | |
225cb03b | 383 | |
c94c581c | 384 | <refsect2><title>udevadm control <replaceable>option</replaceable></title> |
63749b1a KS |
385 | <para>Modify the internal state of the running udev daemon.</para> |
386 | <variablelist> | |
ff2c503d | 387 | <varlistentry> |
bd8420c5 | 388 | <term><option>-e</option></term> |
ff2c503d KS |
389 | <term><option>--exit</option></term> |
390 | <listitem> | |
f13b388f | 391 | <para>Signal and wait for systemd-udevd to exit.</para> |
ff2c503d KS |
392 | </listitem> |
393 | </varlistentry> | |
63749b1a | 394 | <varlistentry> |
7643ac9a | 395 | <term><option>-l</option></term> |
63749b1a KS |
396 | <term><option>--log-priority=<replaceable>value</replaceable></option></term> |
397 | <listitem> | |
e03234a1 ZJS |
398 | <para>Set the internal log level of |
399 | <filename>systemd-udevd</filename>. Valid values are the | |
400 | numerical syslog priorities or their textual | |
401 | representations: <option>emerg</option>, | |
402 | <option>alert</option>, <option>crit</option>, | |
403 | <option>err</option>, <option>warning</option>, | |
404 | <option>notice</option>, <option>info</option>, and | |
405 | <option>debug</option>.</para> | |
63749b1a KS |
406 | </listitem> |
407 | </varlistentry> | |
408 | <varlistentry> | |
7643ac9a | 409 | <term><option>-s</option></term> |
63749b1a KS |
410 | <term><option>--stop-exec-queue</option></term> |
411 | <listitem> | |
f13b388f | 412 | <para>Signal systemd-udevd to stop executing new events. Incoming events |
63749b1a KS |
413 | will be queued.</para> |
414 | </listitem> | |
415 | </varlistentry> | |
416 | <varlistentry> | |
7643ac9a | 417 | <term><option>-S</option></term> |
63749b1a KS |
418 | <term><option>--start-exec-queue</option></term> |
419 | <listitem> | |
f13b388f | 420 | <para>Signal systemd-udevd to enable the execution of events.</para> |
63749b1a KS |
421 | </listitem> |
422 | </varlistentry> | |
423 | <varlistentry> | |
7643ac9a | 424 | <term><option>-R</option></term> |
7c85d636 | 425 | <term><option>--reload</option></term> |
63749b1a | 426 | <listitem> |
f13b388f | 427 | <para>Signal systemd-udevd to reload the rules files and other databases like the kernel |
7c85d636 KS |
428 | module index. Reloading rules and databases does not apply any changes to already |
429 | existing devices; the new configuration will only be applied to new events.</para> | |
63749b1a KS |
430 | </listitem> |
431 | </varlistentry> | |
432 | <varlistentry> | |
7643ac9a | 433 | <term><option>-p</option></term> |
63749b1a KS |
434 | <term><option>--property=<replaceable>KEY</replaceable>=<replaceable>value</replaceable></option></term> |
435 | <listitem> | |
436 | <para>Set a global property for all events.</para> | |
437 | </listitem> | |
438 | </varlistentry> | |
439 | <varlistentry> | |
7643ac9a | 440 | <term><option>-m</option></term> |
87d55ff6 | 441 | <term><option>--children-max=</option><replaceable>value</replaceable></term> |
63749b1a | 442 | <listitem> |
f13b388f | 443 | <para>Set the maximum number of events, systemd-udevd will handle at the |
63749b1a KS |
444 | same time.</para> |
445 | </listitem> | |
446 | </varlistentry> | |
ff2c503d | 447 | <varlistentry> |
c94c581c | 448 | <term><option>-t</option></term> |
ff2c503d KS |
449 | <term><option>--timeout=</option><replaceable>seconds</replaceable></term> |
450 | <listitem> | |
7e505069 | 451 | <para>The maximum number of seconds to wait for a reply from systemd-udevd.</para> |
ff2c503d KS |
452 | </listitem> |
453 | </varlistentry> | |
c94c581c | 454 | |
c94c581c | 455 | <xi:include href="standard-options.xml" xpointer="help" /> |
63749b1a KS |
456 | </variablelist> |
457 | </refsect2> | |
225cb03b | 458 | |
80877656 ZJS |
459 | <refsect2><title>udevadm monitor |
460 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
461 | </title> | |
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462 | <para>Listens to the kernel uevents and events sent out by a udev rule |
463 | and prints the devpath of the event to the console. It can be used to analyze the | |
464 | event timing, by comparing the timestamps of the kernel uevent and the udev event. | |
465 | </para> | |
466 | <variablelist> | |
467 | <varlistentry> | |
7643ac9a | 468 | <term><option>-k</option></term> |
63749b1a KS |
469 | <term><option>--kernel</option></term> |
470 | <listitem> | |
471 | <para>Print the kernel uevents.</para> | |
472 | </listitem> | |
473 | </varlistentry> | |
474 | <varlistentry> | |
7643ac9a | 475 | <term><option>-u</option></term> |
63749b1a KS |
476 | <term><option>--udev</option></term> |
477 | <listitem> | |
478 | <para>Print the udev event after the rule processing.</para> | |
479 | </listitem> | |
480 | </varlistentry> | |
481 | <varlistentry> | |
7643ac9a | 482 | <term><option>-p</option></term> |
63749b1a KS |
483 | <term><option>--property</option></term> |
484 | <listitem> | |
485 | <para>Also print the properties of the event.</para> | |
486 | </listitem> | |
487 | </varlistentry> | |
488 | <varlistentry> | |
7643ac9a | 489 | <term><option>-s</option></term> |
63749b1a KS |
490 | <term><option>--subsystem-match=<replaceable>string[/string]</replaceable></option></term> |
491 | <listitem> | |
aa9744df | 492 | <para>Filter kernel uevents and udev events by subsystem[/devtype]. Only events with a matching subsystem value will pass.</para> |
63749b1a KS |
493 | </listitem> |
494 | </varlistentry> | |
495 | <varlistentry> | |
7643ac9a | 496 | <term><option>-t</option></term> |
63749b1a KS |
497 | <term><option>--tag-match=<replaceable>string</replaceable></option></term> |
498 | <listitem> | |
aa9744df | 499 | <para>Filter udev events by tag. Only udev events with a given tag attached will pass.</para> |
63749b1a KS |
500 | </listitem> |
501 | </varlistentry> | |
c94c581c | 502 | |
c94c581c | 503 | <xi:include href="standard-options.xml" xpointer="help" /> |
63749b1a KS |
504 | </variablelist> |
505 | </refsect2> | |
225cb03b | 506 | |
80877656 ZJS |
507 | <refsect2><title>udevadm test |
508 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
509 | <arg><replaceable>devpath</replaceable></arg> | |
510 | </title> | |
63749b1a KS |
511 | <para>Simulate a udev event run for the given device, and print debug output.</para> |
512 | <variablelist> | |
513 | <varlistentry> | |
7643ac9a | 514 | <term><option>-a</option></term> |
63749b1a KS |
515 | <term><option>--action=<replaceable>string</replaceable></option></term> |
516 | <listitem> | |
517 | <para>The action string.</para> | |
518 | </listitem> | |
519 | </varlistentry> | |
520 | <varlistentry> | |
7643ac9a | 521 | <term><option>-N</option></term> |
124b48b0 | 522 | <term><option>--resolve-names=<constant>early</constant>|<constant>late</constant>|<constant>never</constant></option></term> |
63749b1a | 523 | <listitem> |
124b48b0 ZJS |
524 | <para>Specify when udevadm should resolve names of users |
525 | and groups. When set to <constant>early</constant> (the | |
72f4d966 JE |
526 | default), names will be resolved when the rules are |
527 | parsed. When set to <constant>late</constant>, names will | |
124b48b0 | 528 | be resolved for every event. When set to |
72f4d966 | 529 | <constant>never</constant>, names will never be resolved |
124b48b0 | 530 | and all devices will be owned by root.</para> |
63749b1a KS |
531 | </listitem> |
532 | </varlistentry> | |
c94c581c | 533 | |
c94c581c | 534 | <xi:include href="standard-options.xml" xpointer="help" /> |
63749b1a KS |
535 | </variablelist> |
536 | </refsect2> | |
d7867b31 | 537 | |
80877656 ZJS |
538 | <refsect2><title>udevadm test-builtin |
539 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
540 | <arg><replaceable>command</replaceable></arg> | |
541 | <arg><replaceable>devpath</replaceable></arg> | |
542 | </title> | |
7643ac9a ZJS |
543 | <para>Run a built-in command <replaceable>COMMAND</replaceable> |
544 | for device <replaceable>DEVPATH</replaceable>, and print debug | |
545 | output.</para> | |
d7867b31 | 546 | <variablelist> |
c94c581c | 547 | <xi:include href="standard-options.xml" xpointer="help" /> |
d7867b31 KS |
548 | </variablelist> |
549 | </refsect2> | |
63749b1a | 550 | </refsect1> |
225cb03b | 551 | |
63749b1a KS |
552 | <refsect1> |
553 | <title>See Also</title> | |
554 | <para><citerefentry> | |
555 | <refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum> | |
7d06ef0a | 556 | </citerefentry>, |
63749b1a | 557 | <citerefentry> |
b79f817b | 558 | <refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum> |
63749b1a KS |
559 | </citerefentry></para> |
560 | </refsect1> | |
561 | </refentry> |