1 <?xml version='1.0'?> <!--*-nxml-*-->
2 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
3 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
6 SPDX-License-Identifier: LGPL-2.1+
9 <!-- 0 /// elogind does not need to activate loginctl in configure
10 <refentry id="loginctl" conditional='ENABLE_LOGIND'
11 xmlns:xi="http://www.w3.org/2001/XInclude">
13 <refentry id="loginctl" xmlns:xi="http://www.w3.org/2001/XInclude">
17 <title>loginctl</title>
18 <productname>elogind</productname>
22 <refentrytitle>loginctl</refentrytitle>
23 <manvolnum>1</manvolnum>
27 <refname>loginctl</refname>
28 <refpurpose>Control the elogind login manager</refpurpose>
33 <command>loginctl</command>
34 <arg choice="opt" rep="repeat">OPTIONS</arg>
35 <arg choice="req">COMMAND</arg>
36 <arg choice="opt" rep="repeat">NAME</arg>
41 <title>Description</title>
43 <para><command>loginctl</command> may be used to introspect and
44 control the state of the
45 <!-- 0 /// elogind has no services and is in section 8
46 <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
48 <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
50 <citerefentry><refentrytitle>elogind</refentrytitle><manvolnum>8</manvolnum></citerefentry>
56 <title>Options</title>
58 <para>The following options are understood:</para>
62 <term><option>--no-ask-password</option></term>
64 <listitem><para>Do not query the user for authentication for
65 privileged operations.</para></listitem>
69 <term><option>-p</option></term>
70 <term><option>--property=</option></term>
72 <listitem><para>When showing session/user/seat properties,
73 limit display to certain properties as specified as argument.
74 If not specified, all set properties are shown. The argument
75 should be a property name, such as
76 <literal>Sessions</literal>. If specified more than once, all
77 properties with the specified names are
78 shown.</para></listitem>
82 <term><option>--value</option></term>
84 <listitem><para>When showing session/user/seat properties,
85 only print the value, and skip the property name and
86 <literal>=</literal>.</para></listitem>
90 <term><option>-a</option></term>
91 <term><option>--all</option></term>
93 <listitem><para>When showing session/user/seat properties,
94 show all properties regardless of whether they are set or
95 not.</para></listitem>
99 <term><option>-l</option></term>
100 <term><option>--full</option></term>
102 <listitem><para>Do not ellipsize process tree entries.</para>
107 <term><option>--kill-who=</option></term>
109 <listitem><para>When used with
110 <command>kill-session</command>, choose which processes to
111 kill. Must be one of <option>leader</option>, or
112 <option>all</option> to select whether to kill only the leader
113 process of the session or all processes of the session. If
114 omitted, defaults to <option>all</option>.</para></listitem>
118 <term><option>-s</option></term>
119 <term><option>--signal=</option></term>
121 <listitem><para>When used with <command>kill-session</command>
122 or <command>kill-user</command>, choose which signal to send
123 to selected processes. Must be one of the well known signal
124 specifiers, such as <constant>SIGTERM</constant>,
125 <constant>SIGINT</constant> or <constant>SIGSTOP</constant>.
126 If omitted, defaults to
127 <constant>SIGTERM</constant>.</para></listitem>
130 <!-- 0 /// elogind does not support systemd-journal
132 <term><option>-n</option></term>
133 <term><option>--lines=</option></term>
135 <listitem><para>When used with <command>user-status</command>
136 and <command>session-status</command>, controls the number of
137 journal lines to show, counting from the most recent ones.
138 Takes a positive integer argument. Defaults to 10.</para>
143 <term><option>-o</option></term>
144 <term><option>--output=</option></term>
146 <listitem><para>When used with <command>user-status</command>
147 and <command>session-status</command>, controls the formatting
148 of the journal entries that are shown. For the available
150 <citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>.
151 Defaults to <literal>short</literal>.</para></listitem>
155 <xi:include href="user-system-options.xml" xpointer="host" />
156 <xi:include href="user-system-options.xml" xpointer="machine" />
158 <xi:include href="standard-options.xml" xpointer="no-pager" />
159 <xi:include href="standard-options.xml" xpointer="no-legend" />
160 <xi:include href="standard-options.xml" xpointer="help" />
161 <xi:include href="standard-options.xml" xpointer="version" />
166 <title>Commands</title>
168 <para>The following commands are understood:</para>
170 <refsect2><title>Session Commands</title><variablelist>
173 <term><command>list-sessions</command></term>
175 <listitem><para>List current sessions.</para></listitem>
179 <term><command>session-status</command> <optional><replaceable>ID</replaceable>…</optional></term>
181 <listitem><para>Show terse runtime status information about
182 one or more sessions, followed by the most recent log data
183 from the journal. Takes one or more session identifiers as
184 parameters. If no session identifiers are passed, the status of
185 the caller's session is shown. This function is intended to
186 generate human-readable output. If you are looking for
187 computer-parsable output, use <command>show-session</command>
188 instead.</para></listitem>
192 <term><command>show-session</command> <optional><replaceable>ID</replaceable>…</optional></term>
194 <listitem><para>Show properties of one or more sessions or the
195 manager itself. If no argument is specified, properties of the
196 manager will be shown. If a session ID is specified,
197 properties of the session are shown. By default, empty
198 properties are suppressed. Use <option>--all</option> to show
199 those too. To select specific properties to show, use
200 <option>--property=</option>. This command is intended to be
201 used whenever computer-parsable output is required. Use
202 <command>session-status</command> if you are looking for
203 formatted human-readable output.</para></listitem>
207 <term><command>activate</command> <optional><replaceable>ID</replaceable></optional></term>
209 <listitem><para>Activate a session. This brings a session into
210 the foreground if another session is currently in the
211 foreground on the respective seat. Takes a session identifier
212 as argument. If no argument is specified, the session of the
213 caller is put into foreground.</para></listitem>
217 <term><command>lock-session</command> <optional><replaceable>ID</replaceable>…</optional></term>
218 <term><command>unlock-session</command> <optional><replaceable>ID</replaceable>…</optional></term>
220 <listitem><para>Activates/deactivates the screen lock on one
221 or more sessions, if the session supports it. Takes one or
222 more session identifiers as arguments. If no argument is
223 specified, the session of the caller is locked/unlocked.
228 <term><command>lock-sessions</command></term>
229 <term><command>unlock-sessions</command></term>
231 <listitem><para>Activates/deactivates the screen lock on all
232 current sessions supporting it. </para></listitem>
236 <term><command>terminate-session</command> <replaceable>ID</replaceable>…</term>
238 <listitem><para>Terminates a session. This kills all processes
239 of the session and deallocates all resources attached to the
240 session. </para></listitem>
244 <term><command>kill-session</command> <replaceable>ID</replaceable>…</term>
246 <listitem><para>Send a signal to one or more processes of the
247 session. Use <option>--kill-who=</option> to select which
248 process to kill. Use <option>--signal=</option> to select the
249 signal to send.</para></listitem>
251 </variablelist></refsect2>
253 <refsect2><title>User Commands</title><variablelist>
255 <term><command>list-users</command></term>
257 <listitem><para>List currently logged in users.
262 <term><command>user-status</command> <optional><replaceable>USER</replaceable>…</optional></term>
264 <listitem><para>Show terse runtime status information about
265 one or more logged in users, followed by the most recent log
266 data from the journal. Takes one or more user names or numeric
267 user IDs as parameters. If no parameters are passed, the status
268 is shown for the user of the session of the caller. This
269 function is intended to generate human-readable output. If you
270 are looking for computer-parsable output, use
271 <command>show-user</command> instead.</para></listitem>
275 <term><command>show-user</command> <optional><replaceable>USER</replaceable>…</optional></term>
277 <listitem><para>Show properties of one or more users or the
278 manager itself. If no argument is specified, properties of the
279 manager will be shown. If a user is specified, properties of
280 the user are shown. By default, empty properties are
281 suppressed. Use <option>--all</option> to show those too. To
282 select specific properties to show, use
283 <option>--property=</option>. This command is intended to be
284 used whenever computer-parsable output is required. Use
285 <command>user-status</command> if you are looking for
286 formatted human-readable output.</para></listitem>
289 <!-- 0 /// elogind does not spawn a user manager. Mask until lingeringin elogind is clarified.
291 <term><command>enable-linger</command> <optional><replaceable>USER</replaceable>…</optional></term>
292 <term><command>disable-linger</command> <optional><replaceable>USER</replaceable>…</optional></term>
294 <listitem><para>Enable/disable user lingering for one or more
295 users. If enabled for a specific user, a user manager is
296 spawned for the user at boot and kept around after logouts.
297 This allows users who are not logged in to run long-running
298 services. Takes one or more user names or numeric UIDs as
299 argument. If no argument is specified, enables/disables
300 lingering for the user of the session of the caller.</para>
302 <para>See also <varname>KillUserProcesses=</varname> setting in
303 <citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
309 <term><command>terminate-user</command> <replaceable>USER</replaceable>…</term>
311 <listitem><para>Terminates all sessions of a user. This kills
312 all processes of all sessions of the user and deallocates all
313 runtime resources attached to the user.</para></listitem>
317 <term><command>kill-user</command> <replaceable>USER</replaceable>…</term>
319 <listitem><para>Send a signal to all processes of a user. Use
320 <option>--signal=</option> to select the signal to send.
323 </variablelist></refsect2>
325 <refsect2><title>Seat Commands</title><variablelist>
327 <term><command>list-seats</command></term>
329 <listitem><para>List currently available seats on the local
330 system.</para></listitem>
334 <term><command>seat-status</command> <optional><replaceable>NAME</replaceable>…</optional></term>
336 <listitem><para>Show terse runtime status information about
337 one or more seats. Takes one or more seat names as parameters.
338 If no seat names are passed the status of the caller's
339 session's seat is shown. This function is intended to generate
340 human-readable output. If you are looking for
341 computer-parsable output, use <command>show-seat</command>
342 instead.</para></listitem>
346 <term><command>show-seat</command> <optional><replaceable>NAME</replaceable>…</optional></term>
348 <listitem><para>Show properties of one or more seats or the
349 manager itself. If no argument is specified, properties of the
350 manager will be shown. If a seat is specified, properties of
351 the seat are shown. By default, empty properties are
352 suppressed. Use <option>--all</option> to show those too. To
353 select specific properties to show, use
354 <option>--property=</option>. This command is intended to be
355 used whenever computer-parsable output is required. Use
356 <command>seat-status</command> if you are looking for
357 formatted human-readable output.</para></listitem>
361 <term><command>attach</command> <replaceable>NAME</replaceable> <replaceable>DEVICE</replaceable>…</term>
363 <listitem><para>Persistently attach one or more devices to a
364 seat. The devices should be specified via device paths in the
365 <filename>/sys</filename> file system. To create a new seat,
366 attach at least one graphics card to a previously unused seat
367 name. Seat names may consist only of a–z, A–Z, 0–9,
368 <literal>-</literal> and <literal>_</literal> and must be
369 prefixed with <literal>seat</literal>. To drop assignment of a
370 device to a specific seat, just reassign it to a different
371 seat, or use <command>flush-devices</command>.
376 <term><command>flush-devices</command></term>
378 <listitem><para>Removes all device assignments previously
379 created with <command>attach</command>. After this call, only
380 automatically generated seats will remain, and all seat
381 hardware is assigned to them.</para></listitem>
385 <term><command>terminate-seat</command> <replaceable>NAME</replaceable>…</term>
387 <listitem><para>Terminates all sessions on a seat. This kills
388 all processes of all sessions on the seat and deallocates all
389 runtime resources attached to them.</para></listitem>
391 </variablelist></refsect2>
393 <!-- 1 /// elogind additionally supports a few systemctl commands. -->
394 <refsect2><title>System Commands</title><variablelist>
396 <term><command>poweroff</command></term>
399 <para>Print a wall message to all users, shut down and
400 power-off the system.</para>
404 <term><command>reboot <optional><replaceable>arg</replaceable></optional></command></term>
407 <para>Print a wall message to all users, shut down and
408 reboot the system.</para>
410 <para>If the optional argument
411 <replaceable>arg</replaceable> is given, it will be passed
412 as the optional argument to the
413 <citerefentry><refentrytitle>reboot</refentrytitle><manvolnum>2</manvolnum></citerefentry>
414 system call. The value is architecture and firmware
415 specific. As an example, <literal>recovery</literal> might
416 be used to trigger system recovery, and
417 <literal>fota</literal> might be used to trigger a
418 <quote>firmware over the air</quote> update.</para>
423 <term><command>suspend</command></term>
426 <para>Suspend the system.
432 <term><command>hibernate</command></term>
435 <para>Hibernate the system.
441 <term><command>hybrid-sleep</command></term>
444 <para>Hibernate and suspend the system.</para>
447 </variablelist></refsect2>
452 <title>Exit status</title>
454 <para>On success, 0 is returned, a non-zero failure code
459 <title>Examples</title>
462 <title>Querying user status</title>
464 <!-- 0 /// With elogind no Unit and jurnald output is generated
465 <programlisting>$ loginctl user-status
467 Since: Sat 2016-04-09 14:23:31 EDT; 54min ago
470 Unit: user-1005.slice
476 ├─3473 login -- fatima
479 Apr 09 14:40:30 laptop login[2325]: pam_unix(login:session):
480 session opened for user fatima by LOGIN(uid=0)
481 Apr 09 14:40:30 laptop login[2325]: LOGIN ON tty3 BY fatima
484 <programlisting>$ loginctl user-status
486 Since: Sat 2016-04-09 14:23:31 EDT; 54min ago
489 Unit: user-1005.slice
493 <para>There are two sessions, 3 and 5. Session 3 is a graphical session,
494 marked with a star. The tree of processing including the two corresponding
495 scope units and the user manager unit are shown.</para>
499 <xi:include href="less-variables.xml" />
502 <title>See Also</title>
504 <!-- 0 /// elogind is in section 8
505 <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
506 <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
507 <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
509 <citerefentry><refentrytitle>elogind</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
511 <citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>