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 This file is part of systemd.
8 Copyright 2010 Lennart Poettering
10 systemd is free software; you can redistribute it and/or modify it
11 under the terms of the GNU Lesser General Public License as published by
12 the Free Software Foundation; either version 2.1 of the License, or
13 (at your option) any later version.
15 systemd is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with systemd; If not, see <http://www.gnu.org/licenses/>.
24 <refentry id=
"loginctl" conditional='ENABLE_LOGIND'
25 xmlns:
xi=
"http://www.w3.org/2001/XInclude">
28 <title>loginctl
</title>
29 <productname>systemd
</productname>
33 <contrib>Developer
</contrib>
34 <firstname>Lennart
</firstname>
35 <surname>Poettering
</surname>
36 <email>lennart@poettering.net
</email>
42 <refentrytitle>loginctl
</refentrytitle>
43 <manvolnum>1</manvolnum>
47 <refname>loginctl
</refname>
48 <refpurpose>Control the systemd login manager
</refpurpose>
53 <command>loginctl
</command>
54 <arg choice=
"opt" rep=
"repeat">OPTIONS
</arg>
55 <arg choice=
"req">COMMAND
</arg>
56 <arg choice=
"opt" rep=
"repeat">NAME
</arg>
61 <title>Description
</title>
63 <para><command>loginctl
</command> may be used to introspect and
64 control the state of the
65 <citerefentry><refentrytitle>systemd
</refentrytitle><manvolnum>1</manvolnum></citerefentry>
67 <citerefentry><refentrytitle>systemd-logind.service
</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
</para>
71 <title>Options
</title>
73 <para>The following options are understood:
</para>
77 <term><option>--no-ask-password
</option></term>
79 <listitem><para>Do not query the user for authentication for
80 privileged operations.
</para></listitem>
84 <term><option>-p
</option></term>
85 <term><option>--property=
</option></term>
87 <listitem><para>When showing session/user/seat properties,
88 limit display to certain properties as specified as argument.
89 If not specified, all set properties are shown. The argument
90 should be a property name, such as
91 <literal>Sessions
</literal>. If specified more than once, all
92 properties with the specified names are
93 shown.
</para></listitem>
97 <term><option>--value
</option></term>
100 <para>When printing properties with
<command>show
</command>,
101 only print the value, and skip the property name and
102 <literal>=
</literal>.
</para>
107 <term><option>-a
</option></term>
108 <term><option>--all
</option></term>
110 <listitem><para>When showing session/user/seat properties,
111 show all properties regardless of whether they are set or
112 not.
</para></listitem>
116 <term><option>-l
</option></term>
117 <term><option>--full
</option></term>
119 <listitem><para>Do not ellipsize process tree entries.
</para>
124 <term><option>--kill-who=
</option></term>
126 <listitem><para>When used with
127 <command>kill-session
</command>, choose which processes to
128 kill. Must be one of
<option>leader
</option>, or
129 <option>all
</option> to select whether to kill only the leader
130 process of the session or all processes of the session. If
131 omitted, defaults to
<option>all
</option>.
</para></listitem>
135 <term><option>-s
</option></term>
136 <term><option>--signal=
</option></term>
138 <listitem><para>When used with
<command>kill-session
</command>
139 or
<command>kill-user
</command>, choose which signal to send
140 to selected processes. Must be one of the well known signal
141 specifiers, such as
<constant>SIGTERM
</constant>,
142 <constant>SIGINT
</constant> or
<constant>SIGSTOP
</constant>.
143 If omitted, defaults to
144 <constant>SIGTERM
</constant>.
</para></listitem>
148 <term><option>-n
</option></term>
149 <term><option>--lines=
</option></term>
151 <listitem><para>When used with
<command>user-status
</command>
152 and
<command>session-status
</command>, controls the number of
153 journal lines to show, counting from the most recent ones.
154 Takes a positive integer argument. Defaults to
10.
</para>
159 <term><option>-o
</option></term>
160 <term><option>--output=
</option></term>
162 <listitem><para>When used with
<command>user-status
</command>
163 and
<command>session-status
</command>, controls the formatting
164 of the journal entries that are shown. For the available
166 <citerefentry><refentrytitle>journalctl
</refentrytitle><manvolnum>1</manvolnum></citerefentry>.
167 Defaults to
<literal>short
</literal>.
</para></listitem>
170 <xi:include href=
"user-system-options.xml" xpointer=
"host" />
171 <xi:include href=
"user-system-options.xml" xpointer=
"machine" />
173 <xi:include href=
"standard-options.xml" xpointer=
"no-pager" />
174 <xi:include href=
"standard-options.xml" xpointer=
"no-legend" />
175 <xi:include href=
"standard-options.xml" xpointer=
"help" />
176 <xi:include href=
"standard-options.xml" xpointer=
"version" />
181 <title>Commands
</title>
183 <para>The following commands are understood:
</para>
185 <refsect2><title>Session Commands
</title><variablelist>
188 <term><command>list-sessions
</command></term>
190 <listitem><para>List current sessions.
</para></listitem>
194 <term><command>session-status
</command> <optional><replaceable>ID
</replaceable>…
</optional></term>
196 <listitem><para>Show terse runtime status information about
197 one or more sessions, followed by the most recent log data
198 from the journal. Takes one or more session identifiers as
199 parameters. If no session identifiers are passed, the status of
200 the caller's session is shown. This function is intended to
201 generate human-readable output. If you are looking for
202 computer-parsable output, use
<command>show-session
</command>
203 instead.
</para></listitem>
207 <term><command>show-session
</command> <optional><replaceable>ID
</replaceable>…
</optional></term>
209 <listitem><para>Show properties of one or more sessions or the
210 manager itself. If no argument is specified, properties of the
211 manager will be shown. If a session ID is specified,
212 properties of the session are shown. By default, empty
213 properties are suppressed. Use
<option>--all
</option> to show
214 those too. To select specific properties to show, use
215 <option>--property=
</option>. This command is intended to be
216 used whenever computer-parsable output is required. Use
217 <command>session-status
</command> if you are looking for
218 formatted human-readable output.
</para></listitem>
222 <term><command>activate
</command> <optional><replaceable>ID
</replaceable></optional></term>
224 <listitem><para>Activate a session. This brings a session into
225 the foreground if another session is currently in the
226 foreground on the respective seat. Takes a session identifier
227 as argument. If no argument is specified, the session of the
228 caller is put into foreground.
</para></listitem>
232 <term><command>lock-session
</command> <optional><replaceable>ID
</replaceable>…
</optional></term>
233 <term><command>unlock-session
</command> <optional><replaceable>ID
</replaceable>…
</optional></term>
235 <listitem><para>Activates/deactivates the screen lock on one
236 or more sessions, if the session supports it. Takes one or
237 more session identifiers as arguments. If no argument is
238 specified, the session of the caller is locked/unlocked.
243 <term><command>lock-sessions
</command></term>
244 <term><command>unlock-sessions
</command></term>
246 <listitem><para>Activates/deactivates the screen lock on all
247 current sessions supporting it.
</para></listitem>
251 <term><command>terminate-session
</command> <replaceable>ID
</replaceable>…
</term>
253 <listitem><para>Terminates a session. This kills all processes
254 of the session and deallocates all resources attached to the
255 session.
</para></listitem>
259 <term><command>kill-session
</command> <replaceable>ID
</replaceable>…
</term>
261 <listitem><para>Send a signal to one or more processes of the
262 session. Use
<option>--kill-who=
</option> to select which
263 process to kill. Use
<option>--signal=
</option> to select the
264 signal to send.
</para></listitem>
266 </variablelist></refsect2>
268 <refsect2><title>User Commands
</title><variablelist>
270 <term><command>list-users
</command></term>
272 <listitem><para>List currently logged in users.
277 <term><command>user-status
</command> <optional><replaceable>USER
</replaceable>…
</optional></term>
279 <listitem><para>Show terse runtime status information about
280 one or more logged in users, followed by the most recent log
281 data from the journal. Takes one or more user names or numeric
282 user IDs as parameters. If no parameters are passed, the status
283 is shown for the user of the session of the caller. This
284 function is intended to generate human-readable output. If you
285 are looking for computer-parsable output, use
286 <command>show-user
</command> instead.
</para></listitem>
290 <term><command>show-user
</command> <optional><replaceable>USER
</replaceable>…
</optional></term>
292 <listitem><para>Show properties of one or more users or the
293 manager itself. If no argument is specified, properties of the
294 manager will be shown. If a user is specified, properties of
295 the user are shown. By default, empty properties are
296 suppressed. Use
<option>--all
</option> to show those too. To
297 select specific properties to show, use
298 <option>--property=
</option>. This command is intended to be
299 used whenever computer-parsable output is required. Use
300 <command>user-status
</command> if you are looking for
301 formatted human-readable output.
</para></listitem>
305 <term><command>enable-linger
</command> <optional><replaceable>USER
</replaceable>…
</optional></term>
306 <term><command>disable-linger
</command> <optional><replaceable>USER
</replaceable>…
</optional></term>
308 <listitem><para>Enable/disable user lingering for one or more
309 users. If enabled for a specific user, a user manager is
310 spawned for the user at boot and kept around after logouts.
311 This allows users who are not logged in to run long-running
312 services. Takes one or more user names or numeric UIDs as
313 argument. If no argument is specified, enables/disables
314 lingering for the user of the session of the caller.
</para>
316 <para>See also
<varname>KillUserProcesses=
</varname> setting in
317 <citerefentry><refentrytitle>logind.conf
</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
322 <term><command>terminate-user
</command> <replaceable>USER
</replaceable>…
</term>
324 <listitem><para>Terminates all sessions of a user. This kills
325 all processes of all sessions of the user and deallocates all
326 runtime resources attached to the user.
</para></listitem>
330 <term><command>kill-user
</command> <replaceable>USER
</replaceable>…
</term>
332 <listitem><para>Send a signal to all processes of a user. Use
333 <option>--signal=
</option> to select the signal to send.
336 </variablelist></refsect2>
338 <refsect2><title>Seat Commands
</title><variablelist>
340 <term><command>list-seats
</command></term>
342 <listitem><para>List currently available seats on the local
343 system.
</para></listitem>
347 <term><command>seat-status
</command> <optional><replaceable>NAME
</replaceable>…
</optional></term>
349 <listitem><para>Show terse runtime status information about
350 one or more seats. Takes one or more seat names as parameters.
351 If no seat names are passed the status of the caller's
352 session's seat is shown. This function is intended to generate
353 human-readable output. If you are looking for
354 computer-parsable output, use
<command>show-seat
</command>
355 instead.
</para></listitem>
359 <term><command>show-seat
</command> <optional><replaceable>NAME
</replaceable>…
</optional></term>
361 <listitem><para>Show properties of one or more seats or the
362 manager itself. If no argument is specified, properties of the
363 manager will be shown. If a seat is specified, properties of
364 the seat are shown. By default, empty properties are
365 suppressed. Use
<option>--all
</option> to show those too. To
366 select specific properties to show, use
367 <option>--property=
</option>. This command is intended to be
368 used whenever computer-parsable output is required. Use
369 <command>seat-status
</command> if you are looking for
370 formatted human-readable output.
</para></listitem>
374 <term><command>attach
</command> <replaceable>NAME
</replaceable> <replaceable>DEVICE
</replaceable>…
</term>
376 <listitem><para>Persistently attach one or more devices to a
377 seat. The devices should be specified via device paths in the
378 <filename>/sys
</filename> file system. To create a new seat,
379 attach at least one graphics card to a previously unused seat
380 name. Seat names may consist only of a–z, A–Z,
0–
9,
381 <literal>-
</literal> and
<literal>_
</literal> and must be
382 prefixed with
<literal>seat
</literal>. To drop assignment of a
383 device to a specific seat, just reassign it to a different
384 seat, or use
<command>flush-devices
</command>.
389 <term><command>flush-devices
</command></term>
391 <listitem><para>Removes all device assignments previously
392 created with
<command>attach
</command>. After this call, only
393 automatically generated seats will remain, and all seat
394 hardware is assigned to them.
</para></listitem>
398 <term><command>terminate-seat
</command> <replaceable>NAME
</replaceable>…
</term>
400 <listitem><para>Terminates all sessions on a seat. This kills
401 all processes of all sessions on the seat and deallocates all
402 runtime resources attached to them.
</para></listitem>
404 </variablelist></refsect2>
409 <title>Exit status
</title>
411 <para>On success,
0 is returned, a non-zero failure code
416 <title>Examples
</title>
419 <title>Querying user status
</title>
421 <programlisting>$ loginctl user-status
423 Since: Sat
2016-
04-
09 14:
23:
31 EDT;
54min ago
426 Unit: user-
1005.slice
432 ├─
3473 login -- fatima
435 Apr
09 14:
40:
30 laptop login[
2325]: pam_unix(login:session):
436 session opened for user fatima by LOGIN(uid=
0)
437 Apr
09 14:
40:
30 laptop login[
2325]: LOGIN ON tty3 BY fatima
440 <para>There are two sessions,
3 and
5. Session
3 is a graphical session,
441 marked with a star. The tree of processing including the two corresponding
442 scope units and the user manager unit are shown.
</para>
446 <xi:include href=
"less-variables.xml" />
449 <title>See Also
</title>
451 <citerefentry><refentrytitle>systemd
</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
452 <citerefentry><refentrytitle>systemctl
</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
453 <citerefentry><refentrytitle>systemd-logind.service
</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
454 <citerefentry><refentrytitle>logind.conf
</refentrytitle><manvolnum>5</manvolnum></citerefentry>