projects / systemd.git / blame
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| f47781d8 | 1 | <?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*--> |
| 663996b3 MS |
2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" |
| 3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> | |
| 4 | ||
| 5 | <refentry id="udevadm"> | |
| 6 | <refentryinfo> | |
| 7 | <title>udevadm</title> | |
| 8 | <productname>systemd</productname> | |
| 9 | <authorgroup> | |
| 10 | <author> | |
| 11 | <contrib>Developer</contrib> | |
| 12 | <firstname>Kay</firstname> | |
| 13 | <surname>Sievers</surname> | |
| 14 | <email>kay@vrfy.org</email> | |
| 15 | </author> | |
| 16 | </authorgroup> | |
| 17 | </refentryinfo> | |
| 18 | ||
| 19 | <refmeta> | |
| 20 | <refentrytitle>udevadm</refentrytitle> | |
| 21 | <manvolnum>8</manvolnum> | |
| 663996b3 MS |
22 | </refmeta> |
| 23 | ||
| 24 | <refnamediv> | |
| 25 | <refname>udevadm</refname><refpurpose>udev management tool</refpurpose> | |
| 26 | </refnamediv> | |
| 27 | ||
| 28 | <refsynopsisdiv> | |
| 29 | <cmdsynopsis> | |
| 30 | <command>udevadm</command> | |
| 31 | <arg><option>--debug</option></arg> | |
| 32 | <arg><option>--version</option></arg> | |
| 33 | <arg><option>--help</option></arg> | |
| 34 | </cmdsynopsis> | |
| 35 | <cmdsynopsis> | |
| 36 | <command>udevadm info <replaceable>options</replaceable></command> | |
| 37 | </cmdsynopsis> | |
| 38 | <cmdsynopsis> | |
| 39 | <command>udevadm trigger <optional>options</optional></command> | |
| 40 | </cmdsynopsis> | |
| 41 | <cmdsynopsis> | |
| 42 | <command>udevadm settle <optional>options</optional></command> | |
| 43 | </cmdsynopsis> | |
| 44 | <cmdsynopsis> | |
| 45 | <command>udevadm control <replaceable>command</replaceable></command> | |
| 46 | </cmdsynopsis> | |
| 47 | <cmdsynopsis> | |
| 48 | <command>udevadm monitor <optional>options</optional></command> | |
| 49 | </cmdsynopsis> | |
| 663996b3 MS |
50 | <cmdsynopsis> |
| 51 | <command>udevadm test <optional>options</optional> <replaceable>devpath</replaceable></command> | |
| 52 | </cmdsynopsis> | |
| 53 | <cmdsynopsis> | |
| 54 | <command>udevadm test-builtin <optional>options</optional> <replaceable>command</replaceable> <replaceable>devpath</replaceable></command> | |
| 55 | </cmdsynopsis> | |
| 56 | </refsynopsisdiv> | |
| 57 | ||
| 58 | <refsect1><title>Description</title> | |
| 60f067b4 JS |
59 | <para><command>udevadm</command> expects a command and command |
| 60 | specific options. It controls the runtime behavior of | |
| 61 | <command>systemd-udevd</command>, requests kernel events, manages | |
| 62 | the event queue, and provides simple debugging mechanisms.</para> | |
| 663996b3 MS |
63 | </refsect1> |
| 64 | ||
| f47781d8 | 65 | <refsect1><title>Options</title> |
| 663996b3 MS |
66 | <variablelist> |
| 67 | <varlistentry> | |
| 68 | <term><option>--debug</option></term> | |
| 69 | <listitem> | |
| 60f067b4 | 70 | <para>Print debug messages to standard error.</para> |
| 663996b3 MS |
71 | </listitem> |
| 72 | </varlistentry> | |
| 73 | <varlistentry> | |
| 74 | <term><option>--version</option></term> | |
| 75 | <listitem> | |
| 76 | <para>Print version number.</para> | |
| 77 | </listitem> | |
| 78 | </varlistentry> | |
| 79 | <varlistentry> | |
| 60f067b4 | 80 | <term><option>-h</option></term> |
| 663996b3 MS |
81 | <term><option>--help</option></term> |
| 82 | <listitem> | |
| 83 | <para>Print help text.</para> | |
| 84 | </listitem> | |
| 85 | </varlistentry> | |
| 86 | </variablelist> | |
| 87 | ||
| f47781d8 MP |
88 | <refsect2><title>udevadm info |
| 89 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
| 90 | <arg choice="opt"><replaceable>devpath</replaceable>|<replaceable>file</replaceable></arg> | |
| 91 | </title> | |
| 92 | ||
| 663996b3 MS |
93 | <para>Queries the udev database for device information |
| 94 | stored in the udev database. It can also query the properties | |
| 95 | of a device from its sysfs representation to help creating udev | |
| 96 | rules that match this device.</para> | |
| 97 | <variablelist> | |
| 98 | <varlistentry> | |
| 60f067b4 JS |
99 | <term><option>-q</option></term> |
| 100 | <term><option>--query=<replaceable>TYPE</replaceable></option></term> | |
| 663996b3 | 101 | <listitem> |
| 60f067b4 JS |
102 | <para>Query the database for the specified type of device |
| 103 | data. It needs the <option>--path</option> or | |
| 104 | <option>--name</option> to identify the specified device. | |
| 105 | Valid <replaceable>TYPE</replaceable>s are: | |
| 106 | <constant>name</constant>, <constant>symlink</constant>, | |
| 107 | <constant>path</constant>, <constant>property</constant>, | |
| 108 | <constant>all</constant>.</para> | |
| 663996b3 MS |
109 | </listitem> |
| 110 | </varlistentry> | |
| 111 | <varlistentry> | |
| 60f067b4 JS |
112 | <term><option>-p</option></term> |
| 113 | <term><option>--path=<replaceable>DEVPATH</replaceable></option></term> | |
| 663996b3 | 114 | <listitem> |
| 60f067b4 JS |
115 | <para>The <filename>/sys</filename> path of the device to |
| 116 | query, e.g. | |
| 117 | <filename><optional>/sys</optional>/class/block/sda</filename>. | |
| 118 | Note that this option usually is not very useful, since | |
| 119 | <command>udev</command> can guess the type of the | |
| 120 | argument, so <command>udevadm | |
| 121 | --devpath=/class/block/sda</command> is equivalent to | |
| 122 | <command>udevadm /sys/class/block/sda</command>.</para> | |
| 663996b3 MS |
123 | </listitem> |
| 124 | </varlistentry> | |
| 125 | <varlistentry> | |
| 60f067b4 JS |
126 | <term><option>-n</option></term> |
| 127 | <term><option>--name=<replaceable>FILE</replaceable></option></term> | |
| 663996b3 | 128 | <listitem> |
| 60f067b4 JS |
129 | <para>The name of the device node or a symlink to query, |
| 130 | e.g. <filename><optional>/dev</optional>/sda</filename>. | |
| 131 | Note that this option usually is not very useful, since | |
| 132 | <command>udev</command> can guess the type of the | |
| 133 | argument, so <command>udevadm --name=sda</command> is | |
| 134 | equivalent to <command>udevadm /dev/sda</command>.</para> | |
| 663996b3 MS |
135 | </listitem> |
| 136 | </varlistentry> | |
| 137 | <varlistentry> | |
| 60f067b4 | 138 | <term><option>-r</option></term> |
| 663996b3 MS |
139 | <term><option>--root</option></term> |
| 140 | <listitem> | |
| 141 | <para>Print absolute paths in <command>name</command> or <command>symlink</command> | |
| 142 | query.</para> | |
| 143 | </listitem> | |
| 144 | </varlistentry> | |
| 145 | <varlistentry> | |
| 60f067b4 | 146 | <term><option>-a</option></term> |
| 663996b3 MS |
147 | <term><option>--attribute-walk</option></term> |
| 148 | <listitem> | |
| 149 | <para>Print all sysfs properties of the specified device that can be used | |
| 150 | in udev rules to match the specified device. It prints all devices | |
| 151 | along the chain, up to the root of sysfs that can be used in udev rules.</para> | |
| 152 | </listitem> | |
| 153 | </varlistentry> | |
| 154 | <varlistentry> | |
| 60f067b4 | 155 | <term><option>-x</option></term> |
| 663996b3 MS |
156 | <term><option>--export</option></term> |
| 157 | <listitem> | |
| 158 | <para>Print output as key/value pairs. Values are enclosed in single quotes.</para> | |
| 159 | </listitem> | |
| 160 | </varlistentry> | |
| 161 | <varlistentry> | |
| 60f067b4 JS |
162 | <term><option>-P</option></term> |
| 163 | <term><option>--export-prefix=<replaceable>NAME</replaceable></option></term> | |
| 663996b3 MS |
164 | <listitem> |
| 165 | <para>Add a prefix to the key name of exported values.</para> | |
| 166 | </listitem> | |
| 167 | </varlistentry> | |
| 168 | <varlistentry> | |
| 60f067b4 JS |
169 | <term><option>-d</option></term> |
| 170 | <term><option>--device-id-of-file=<replaceable>FILE</replaceable></option></term> | |
| 663996b3 MS |
171 | <listitem> |
| 172 | <para>Print major/minor numbers of the underlying device, where the file | |
| 173 | lives on.</para> | |
| 174 | </listitem> | |
| 175 | </varlistentry> | |
| 176 | <varlistentry> | |
| 60f067b4 | 177 | <term><option>-e</option></term> |
| 663996b3 MS |
178 | <term><option>--export-db</option></term> |
| 179 | <listitem> | |
| 180 | <para>Export the content of the udev database.</para> | |
| 181 | </listitem> | |
| 182 | </varlistentry> | |
| 183 | <varlistentry> | |
| 60f067b4 | 184 | <term><option>-c</option></term> |
| 663996b3 MS |
185 | <term><option>--cleanup-db</option></term> |
| 186 | <listitem> | |
| 187 | <para>Cleanup the udev database.</para> | |
| 188 | </listitem> | |
| 189 | </varlistentry> | |
| 190 | <varlistentry> | |
| 191 | <term><option>--version</option></term> | |
| 192 | <listitem> | |
| 193 | <para>Print version.</para> | |
| 194 | </listitem> | |
| 195 | </varlistentry> | |
| 196 | <varlistentry> | |
| 60f067b4 | 197 | <term><option>-h</option></term> |
| 663996b3 MS |
198 | <term><option>--help</option></term> |
| 199 | <listitem> | |
| 200 | <para>Print help text.</para> | |
| 201 | </listitem> | |
| 202 | </varlistentry> | |
| 203 | </variablelist> | |
| f47781d8 | 204 | |
| db2df898 | 205 | <para>In addition, an optional positional argument can be used |
| f47781d8 MP |
206 | to specify a device name or a sys path. It must start with |
| 207 | <filename>/dev</filename> or <filename>/sys</filename> | |
| 208 | respectively.</para> | |
| 663996b3 MS |
209 | </refsect2> |
| 210 | ||
| f47781d8 MP |
211 | <refsect2><title>udevadm trigger |
| 212 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
| 213 | <arg choice="opt" rep="repeat"><replaceable>devpath</replaceable>|<replaceable>file</replaceable></arg></title> | |
| 663996b3 MS |
214 | <para>Request device events from the kernel. Primarily used to replay events at system coldplug time.</para> |
| 215 | <variablelist> | |
| 216 | <varlistentry> | |
| 60f067b4 | 217 | <term><option>-v</option></term> |
| 663996b3 MS |
218 | <term><option>--verbose</option></term> |
| 219 | <listitem> | |
| 220 | <para>Print the list of devices which will be triggered.</para> | |
| 221 | </listitem> | |
| 222 | </varlistentry> | |
| 223 | <varlistentry> | |
| 60f067b4 | 224 | <term><option>-n</option></term> |
| 663996b3 MS |
225 | <term><option>--dry-run</option></term> |
| 226 | <listitem> | |
| 227 | <para>Do not actually trigger the event.</para> | |
| 228 | </listitem> | |
| 229 | </varlistentry> | |
| 230 | <varlistentry> | |
| 60f067b4 JS |
231 | <term><option>-t</option></term> |
| 232 | <term><option>--type=<replaceable>TYPE</replaceable></option></term> | |
| 663996b3 MS |
233 | <listitem> |
| 234 | <para>Trigger a specific type of devices. Valid types are: | |
| 235 | <command>devices</command>, <command>subsystems</command>. | |
| 236 | The default value is <command>devices</command>.</para> | |
| 237 | </listitem> | |
| 238 | </varlistentry> | |
| 239 | <varlistentry> | |
| 60f067b4 JS |
240 | <term><option>-c</option></term> |
| 241 | <term><option>--action=<replaceable>ACTION</replaceable></option></term> | |
| 663996b3 | 242 | <listitem> |
| 60f067b4 JS |
243 | <para>Type of event to be triggered. The default value is |
| 244 | <command>change</command>.</para> | |
| 663996b3 MS |
245 | </listitem> |
| 246 | </varlistentry> | |
| 247 | <varlistentry> | |
| 60f067b4 JS |
248 | <term><option>-s</option></term> |
| 249 | <term><option>--subsystem-match=<replaceable>SUBSYSTEM</replaceable></option></term> | |
| 663996b3 | 250 | <listitem> |
| 60f067b4 JS |
251 | <para>Trigger events for devices which belong to a |
| 252 | matching subsystem. This option can be specified multiple | |
| 253 | times and supports shell style pattern matching.</para> | |
| 663996b3 MS |
254 | </listitem> |
| 255 | </varlistentry> | |
| 256 | <varlistentry> | |
| 60f067b4 JS |
257 | <term><option>-S</option></term> |
| 258 | <term><option>--subsystem-nomatch=<replaceable>SUBSYSTEM</replaceable></option></term> | |
| 663996b3 MS |
259 | <listitem> |
| 260 | <para>Do not trigger events for devices which belong to a matching subsystem. This option | |
| 261 | can be specified multiple times and supports shell style pattern matching.</para> | |
| 262 | </listitem> | |
| 263 | </varlistentry> | |
| 264 | <varlistentry> | |
| 60f067b4 JS |
265 | <term><option>-a</option></term> |
| 266 | <term><option>--attr-match=<replaceable>ATTRIBUTE</replaceable>=<replaceable>VALUE</replaceable></option></term> | |
| 663996b3 | 267 | <listitem> |
| 60f067b4 JS |
268 | <para>Trigger events for devices with a matching sysfs |
| 269 | attribute. If a value is specified along with the | |
| 270 | attribute name, the content of the attribute is matched | |
| 271 | against the given value using shell style pattern | |
| 272 | matching. If no value is specified, the existence of the | |
| 273 | sysfs attribute is checked. This option can be specified | |
| 274 | multiple times.</para> | |
| 663996b3 MS |
275 | </listitem> |
| 276 | </varlistentry> | |
| 277 | <varlistentry> | |
| 60f067b4 JS |
278 | <term><option>-A</option></term> |
| 279 | <term><option>--attr-nomatch=<replaceable>ATTRIBUTE</replaceable>=<replaceable>VALUE</replaceable></option></term> | |
| 663996b3 | 280 | <listitem> |
| 60f067b4 JS |
281 | <para>Do not trigger events for devices with a matching |
| 282 | sysfs attribute. If a value is specified along with the | |
| 283 | attribute name, the content of the attribute is matched | |
| 284 | against the given value using shell style pattern | |
| 285 | matching. If no value is specified, the existence of the | |
| 286 | sysfs attribute is checked. This option can be specified | |
| 287 | multiple times.</para> | |
| 663996b3 MS |
288 | </listitem> |
| 289 | </varlistentry> | |
| 290 | <varlistentry> | |
| 60f067b4 JS |
291 | <term><option>-p</option></term> |
| 292 | <term><option>--property-match=<replaceable>PROPERTY</replaceable>=<replaceable>VALUE</replaceable></option></term> | |
| 663996b3 | 293 | <listitem> |
| 60f067b4 JS |
294 | <para>Trigger events for devices with a matching property |
| 295 | value. This option can be specified multiple times and | |
| 296 | supports shell style pattern matching.</para> | |
| 663996b3 MS |
297 | </listitem> |
| 298 | </varlistentry> | |
| 299 | <varlistentry> | |
| 60f067b4 JS |
300 | <term><option>-g</option></term> |
| 301 | <term><option>--tag-match=<replaceable>PROPERTY</replaceable></option></term> | |
| 663996b3 | 302 | <listitem> |
| 60f067b4 JS |
303 | <para>Trigger events for devices with a matching tag. This |
| 304 | option can be specified multiple times.</para> | |
| 663996b3 MS |
305 | </listitem> |
| 306 | </varlistentry> | |
| 307 | <varlistentry> | |
| 60f067b4 | 308 | <term><option>-y</option></term> |
| f47781d8 | 309 | <term><option>--sysname-match=<replaceable>PATH</replaceable></option></term> |
| 663996b3 | 310 | <listitem> |
| 60f067b4 | 311 | <para>Trigger events for devices with a matching sys |
| f47781d8 | 312 | device path. This option can be specified multiple times |
| 60f067b4 | 313 | and supports shell style pattern matching.</para> |
| 663996b3 MS |
314 | </listitem> |
| 315 | </varlistentry> | |
| f47781d8 MP |
316 | <varlistentry> |
| 317 | <term><option>--name-match=<replaceable>NAME</replaceable></option></term> | |
| 318 | <listitem> | |
| 319 | <para>Trigger events for devices with a matching | |
| db2df898 | 320 | device path. This option can be specified multiple |
| f47781d8 MP |
321 | times.</para> |
| 322 | </listitem> | |
| 323 | </varlistentry> | |
| 663996b3 | 324 | <varlistentry> |
| 60f067b4 JS |
325 | <term><option>-b</option></term> |
| 326 | <term><option>--parent-match=<replaceable>SYSPATH</replaceable></option></term> | |
| 663996b3 | 327 | <listitem> |
| 60f067b4 JS |
328 | <para>Trigger events for all children of a given |
| 329 | device.</para> | |
| 330 | </listitem> | |
| 331 | </varlistentry> | |
| 332 | <varlistentry> | |
| 333 | <term><option>-h</option></term> | |
| 334 | <term><option>--help</option></term> | |
| 335 | <listitem> | |
| 336 | <para>Print help text.</para> | |
| 663996b3 MS |
337 | </listitem> |
| 338 | </varlistentry> | |
| 339 | </variablelist> | |
| f47781d8 | 340 | |
| db2df898 | 341 | <para>In addition, optional positional arguments can be used |
| f47781d8 MP |
342 | to specify device names or sys paths. They must start with |
| 343 | <filename>/dev</filename> or <filename>/sys</filename> | |
| 344 | respectively.</para> | |
| 663996b3 MS |
345 | </refsect2> |
| 346 | ||
| f47781d8 MP |
347 | <refsect2><title>udevadm settle |
| 348 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
| 349 | </title> | |
| 663996b3 MS |
350 | <para>Watches the udev event queue, and exits if all current events are handled.</para> |
| 351 | <variablelist> | |
| 352 | <varlistentry> | |
| 60f067b4 JS |
353 | <term><option>-t</option></term> |
| 354 | <term><option>--timeout=<replaceable>SECONDS</replaceable></option></term> | |
| 663996b3 | 355 | <listitem> |
| 60f067b4 JS |
356 | <para>Maximum number of seconds to wait for the event |
| 357 | queue to become empty. The default value is 120 seconds. A | |
| 358 | value of 0 will check if the queue is empty and always | |
| 359 | return immediately.</para> | |
| 663996b3 MS |
360 | </listitem> |
| 361 | </varlistentry> | |
| 362 | <varlistentry> | |
| 60f067b4 JS |
363 | <term><option>-E</option></term> |
| 364 | <term><option>--exit-if-exists=<replaceable>FILE</replaceable></option></term> | |
| 663996b3 MS |
365 | <listitem> |
| 366 | <para>Stop waiting if file exists.</para> | |
| 367 | </listitem> | |
| 368 | </varlistentry> | |
| 369 | <varlistentry> | |
| 60f067b4 | 370 | <term><option>-h</option></term> |
| 663996b3 MS |
371 | <term><option>--help</option></term> |
| 372 | <listitem> | |
| 373 | <para>Print help text.</para> | |
| 374 | </listitem> | |
| 375 | </varlistentry> | |
| 376 | </variablelist> | |
| 377 | </refsect2> | |
| 378 | ||
| 379 | <refsect2><title>udevadm control <replaceable>command</replaceable></title> | |
| 380 | <para>Modify the internal state of the running udev daemon.</para> | |
| 381 | <variablelist> | |
| 382 | <varlistentry> | |
| 5a920b42 | 383 | <term><option>-e</option></term> |
| 663996b3 MS |
384 | <term><option>--exit</option></term> |
| 385 | <listitem> | |
| 386 | <para>Signal and wait for systemd-udevd to exit.</para> | |
| 387 | </listitem> | |
| 388 | </varlistentry> | |
| 389 | <varlistentry> | |
| 60f067b4 | 390 | <term><option>-l</option></term> |
| 663996b3 MS |
391 | <term><option>--log-priority=<replaceable>value</replaceable></option></term> |
| 392 | <listitem> | |
| f47781d8 MP |
393 | <para>Set the internal log level of |
| 394 | <filename>systemd-udevd</filename>. Valid values are the | |
| 395 | numerical syslog priorities or their textual | |
| 396 | representations: <option>emerg</option>, | |
| 397 | <option>alert</option>, <option>crit</option>, | |
| 398 | <option>err</option>, <option>warning</option>, | |
| 399 | <option>notice</option>, <option>info</option>, and | |
| 400 | <option>debug</option>.</para> | |
| 663996b3 MS |
401 | </listitem> |
| 402 | </varlistentry> | |
| 403 | <varlistentry> | |
| 60f067b4 | 404 | <term><option>-s</option></term> |
| 663996b3 MS |
405 | <term><option>--stop-exec-queue</option></term> |
| 406 | <listitem> | |
| 407 | <para>Signal systemd-udevd to stop executing new events. Incoming events | |
| 408 | will be queued.</para> | |
| 409 | </listitem> | |
| 410 | </varlistentry> | |
| 411 | <varlistentry> | |
| 60f067b4 | 412 | <term><option>-S</option></term> |
| 663996b3 MS |
413 | <term><option>--start-exec-queue</option></term> |
| 414 | <listitem> | |
| 415 | <para>Signal systemd-udevd to enable the execution of events.</para> | |
| 416 | </listitem> | |
| 417 | </varlistentry> | |
| 418 | <varlistentry> | |
| 60f067b4 | 419 | <term><option>-R</option></term> |
| 663996b3 MS |
420 | <term><option>--reload</option></term> |
| 421 | <listitem> | |
| 422 | <para>Signal systemd-udevd to reload the rules files and other databases like the kernel | |
| 423 | module index. Reloading rules and databases does not apply any changes to already | |
| 424 | existing devices; the new configuration will only be applied to new events.</para> | |
| 425 | </listitem> | |
| 426 | </varlistentry> | |
| 427 | <varlistentry> | |
| 60f067b4 | 428 | <term><option>-p</option></term> |
| 663996b3 MS |
429 | <term><option>--property=<replaceable>KEY</replaceable>=<replaceable>value</replaceable></option></term> |
| 430 | <listitem> | |
| 431 | <para>Set a global property for all events.</para> | |
| 432 | </listitem> | |
| 433 | </varlistentry> | |
| 434 | <varlistentry> | |
| 60f067b4 | 435 | <term><option>-m</option></term> |
| 663996b3 MS |
436 | <term><option>--children-max=</option><replaceable>value</replaceable></term> |
| 437 | <listitem> | |
| 438 | <para>Set the maximum number of events, systemd-udevd will handle at the | |
| 439 | same time.</para> | |
| 440 | </listitem> | |
| 441 | </varlistentry> | |
| 442 | <varlistentry> | |
| 443 | <term><option>--timeout=</option><replaceable>seconds</replaceable></term> | |
| 444 | <listitem> | |
| 445 | <para>The maximum number of seconds to wait for a reply from systemd-udevd.</para> | |
| 446 | </listitem> | |
| 447 | </varlistentry> | |
| 448 | <varlistentry> | |
| 60f067b4 | 449 | <term><option>-h</option></term> |
| 663996b3 MS |
450 | <term><option>--help</option></term> |
| 451 | <listitem> | |
| 452 | <para>Print help text.</para> | |
| 453 | </listitem> | |
| 454 | </varlistentry> | |
| 455 | </variablelist> | |
| 456 | </refsect2> | |
| 457 | ||
| f47781d8 MP |
458 | <refsect2><title>udevadm monitor |
| 459 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
| 460 | </title> | |
| 663996b3 MS |
461 | <para>Listens to the kernel uevents and events sent out by a udev rule |
| 462 | and prints the devpath of the event to the console. It can be used to analyze the | |
| 463 | event timing, by comparing the timestamps of the kernel uevent and the udev event. | |
| 464 | </para> | |
| 465 | <variablelist> | |
| 466 | <varlistentry> | |
| 60f067b4 | 467 | <term><option>-k</option></term> |
| 663996b3 MS |
468 | <term><option>--kernel</option></term> |
| 469 | <listitem> | |
| 470 | <para>Print the kernel uevents.</para> | |
| 471 | </listitem> | |
| 472 | </varlistentry> | |
| 473 | <varlistentry> | |
| 60f067b4 | 474 | <term><option>-u</option></term> |
| 663996b3 MS |
475 | <term><option>--udev</option></term> |
| 476 | <listitem> | |
| 477 | <para>Print the udev event after the rule processing.</para> | |
| 478 | </listitem> | |
| 479 | </varlistentry> | |
| 480 | <varlistentry> | |
| 60f067b4 | 481 | <term><option>-p</option></term> |
| 663996b3 MS |
482 | <term><option>--property</option></term> |
| 483 | <listitem> | |
| 484 | <para>Also print the properties of the event.</para> | |
| 485 | </listitem> | |
| 486 | </varlistentry> | |
| 487 | <varlistentry> | |
| 60f067b4 | 488 | <term><option>-s</option></term> |
| 663996b3 MS |
489 | <term><option>--subsystem-match=<replaceable>string[/string]</replaceable></option></term> |
| 490 | <listitem> | |
| 491 | <para>Filter events by subsystem[/devtype]. Only udev events with a matching subsystem value will pass.</para> | |
| 492 | </listitem> | |
| 493 | </varlistentry> | |
| 494 | <varlistentry> | |
| 60f067b4 | 495 | <term><option>-t</option></term> |
| 663996b3 MS |
496 | <term><option>--tag-match=<replaceable>string</replaceable></option></term> |
| 497 | <listitem> | |
| 498 | <para>Filter events by property. Only udev events with a given tag attached will pass.</para> | |
| 499 | </listitem> | |
| 500 | </varlistentry> | |
| 501 | <varlistentry> | |
| 60f067b4 | 502 | <term><option>-h</option></term> |
| 663996b3 MS |
503 | <term><option>--help</option></term> |
| 504 | <listitem> | |
| 505 | <para>Print help text.</para> | |
| 506 | </listitem> | |
| 507 | </varlistentry> | |
| 508 | </variablelist> | |
| 509 | </refsect2> | |
| 510 | ||
| f47781d8 MP |
511 | <refsect2><title>udevadm test |
| 512 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
| 513 | <arg><replaceable>devpath</replaceable></arg> | |
| 514 | </title> | |
| 663996b3 MS |
515 | <para>Simulate a udev event run for the given device, and print debug output.</para> |
| 516 | <variablelist> | |
| 517 | <varlistentry> | |
| 60f067b4 | 518 | <term><option>-a</option></term> |
| 663996b3 MS |
519 | <term><option>--action=<replaceable>string</replaceable></option></term> |
| 520 | <listitem> | |
| 521 | <para>The action string.</para> | |
| 522 | </listitem> | |
| 523 | </varlistentry> | |
| 524 | <varlistentry> | |
| 60f067b4 JS |
525 | <term><option>-N</option></term> |
| 526 | <term><option>--resolve-names=<constant>early</constant>|<constant>late</constant>|<constant>never</constant></option></term> | |
| 663996b3 | 527 | <listitem> |
| 60f067b4 JS |
528 | <para>Specify when udevadm should resolve names of users |
| 529 | and groups. When set to <constant>early</constant> (the | |
| 530 | default), names will be resolved when the rules are | |
| 531 | parsed. When set to <constant>late</constant>, names will | |
| 532 | be resolved for every event. When set to | |
| 533 | <constant>never</constant>, names will never be resolved | |
| 534 | and all devices will be owned by root.</para> | |
| 663996b3 MS |
535 | </listitem> |
| 536 | </varlistentry> | |
| 537 | <varlistentry> | |
| 60f067b4 | 538 | <term><option>-h</option></term> |
| 663996b3 MS |
539 | <term><option>--help</option></term> |
| 540 | <listitem> | |
| 541 | <para>Print help text.</para> | |
| 542 | </listitem> | |
| 543 | </varlistentry> | |
| 544 | </variablelist> | |
| 545 | </refsect2> | |
| 546 | ||
| f47781d8 MP |
547 | <refsect2><title>udevadm test-builtin |
| 548 | <arg choice="opt"><replaceable>options</replaceable></arg> | |
| 549 | <arg><replaceable>command</replaceable></arg> | |
| 550 | <arg><replaceable>devpath</replaceable></arg> | |
| 551 | </title> | |
| 60f067b4 JS |
552 | <para>Run a built-in command <replaceable>COMMAND</replaceable> |
| 553 | for device <replaceable>DEVPATH</replaceable>, and print debug | |
| 554 | output.</para> | |
| 663996b3 MS |
555 | <variablelist> |
| 556 | <varlistentry> | |
| 60f067b4 | 557 | <term><option>-h</option></term> |
| 663996b3 MS |
558 | <term><option>--help</option></term> |
| 559 | <listitem> | |
| 560 | <para>Print help text.</para> | |
| 561 | </listitem> | |
| 562 | </varlistentry> | |
| 563 | </variablelist> | |
| 564 | </refsect2> | |
| 565 | </refsect1> | |
| 566 | ||
| 567 | <refsect1> | |
| 568 | <title>See Also</title> | |
| 569 | <para><citerefentry> | |
| 570 | <refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum> | |
| 60f067b4 | 571 | </citerefentry>, |
| 663996b3 MS |
572 | <citerefentry> |
| 573 | <refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum> | |
| 574 | </citerefentry></para> | |
| 575 | </refsect1> | |
| 576 | </refentry> |