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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"

"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">

<refentry id="loginctl" conditional='ENABLE_LOGIND'

xmlns:xi="http://www.w3.org/2001/XInclude">

<refentryinfo>

<title>loginctl</title>

<productname>systemd</productname>

<authorgroup>

<author>

<contrib>Developer</contrib>

<firstname>Lennart</firstname>

<surname>Poettering</surname>

<email>lennart@poettering.net</email>

</author>

</authorgroup>

</refentryinfo>

<refmeta>

<refentrytitle>loginctl</refentrytitle>

<manvolnum>1</manvolnum>

</refmeta>

<refnamediv>

<refname>loginctl</refname>

<refpurpose>Control the systemd login manager</refpurpose>

</refnamediv>

<refsynopsisdiv>

<cmdsynopsis>

<command>loginctl</command>

<arg choice="opt" rep="repeat">OPTIONS</arg>

<arg choice="req">COMMAND</arg>

<arg choice="opt" rep="repeat">NAME</arg>

</cmdsynopsis>

</refsynopsisdiv>

<refsect1>

<title>Description</title>

<para><command>loginctl</command> may be used to

introspect and control the state of the

<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>

login manager <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>

</refsect1>

<refsect1>

<title>Options</title>

<para>The following options are understood:</para>

<variablelist>

<varlistentry>

<term><option>--no-legend</option></term>

<listitem>

<para>Do not print the legend,

i.e. the column headers and

the footer.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><option>--no-ask-password</option></term>

<listitem><para>Do not query the user

for authentication for privileged

operations.</para></listitem>

</varlistentry>

<varlistentry>

<term><option>-p</option></term>

<term><option>--property=</option></term>

<listitem><para>When showing

session/user/seat properties, limit

display to certain properties as

specified as argument. If not

specified, all set properties are

shown. The argument should be a

property name, such as

<literal>Sessions</literal>. If

specified more than once, all

properties with the specified names

are shown.</para></listitem>

</varlistentry>

<varlistentry>

<term><option>-a</option></term>

<term><option>--all</option></term>

<listitem><para>When showing

session/user/seat properties, show all

properties regardless of whether they are

set or not.</para></listitem>

</varlistentry>

<varlistentry>

<term><option>-l</option></term>

<term><option>--full</option></term>

<listitem><para>Do not ellipsize

process tree entries.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><option>--kill-who=</option></term>

<listitem><para>When used with

<command>kill-session</command>,

choose which processes to kill. Must

be one of <option>leader</option>, or

<option>all</option> to select whether

to kill only the leader process of the

session or all processes of the

session. If omitted, defaults to

<option>all</option>.</para></listitem>

</varlistentry>

<varlistentry>

<term><option>-s</option></term>

<term><option>--signal=</option></term>

<listitem><para>When used with

<command>kill-session</command> or

<command>kill-user</command>, choose

which signal to send to selected

processes. Must be one of the well

known signal specifiers, such as

<constant>SIGTERM</constant>,

<constant>SIGINT</constant> or

<constant>SIGSTOP</constant>. If

omitted, defaults to

<constant>SIGTERM</constant>.</para></listitem>

</varlistentry>

<varlistentry>

<term><option>-n</option></term>

<term><option>--lines=</option></term>

<listitem><para>When used with

<command>user-status</command> and

<command>session-status</command>,

controls the number of journal lines

to show, counting from the most recent

ones. Takes a positive integer

argument. Defaults to 10.</para>

</listitem>

</varlistentry>

<varlistentry>

<term><option>-o</option></term>

<term><option>--output=</option></term>

<listitem><para>When used with

<command>user-status</command> and

<command>session-status</command>,

controls the formatting of the journal

entries that are shown. For the

available choices, see

<citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>.

Defaults to

<literal>short</literal>.</para></listitem>

</varlistentry>

<xi:include href="user-system-options.xml" xpointer="host" />

<xi:include href="user-system-options.xml" xpointer="machine" />

<xi:include href="standard-options.xml" xpointer="help" />

<xi:include href="standard-options.xml" xpointer="version" />

<xi:include href="standard-options.xml" xpointer="no-pager" />

</variablelist>

<para>The following commands are understood:</para>

<variablelist>

<varlistentry>

<term><command>list-sessions</command></term>

<listitem><para>List current sessions.</para></listitem>

</varlistentry>

<varlistentry>

<term><command>session-status</command> <replaceable>ID</replaceable>...</term>

<listitem><para>Show terse runtime

status information about one or more

sessions, followed by the most recent

log data from the journal. This

function is intended to generate

human-readable output. If you are

looking for computer-parsable output,

use <command>show-session</command>

instead.</para></listitem>

</varlistentry>

<varlistentry>

<term><command>show-session</command> <optional><replaceable>ID</replaceable>...</optional></term>

<listitem><para>Show properties of one

or more sessions or the manager

itself. If no argument is specified,

properties of the manager will be

shown. If a session ID is specified,

properties of the session are shown. By

default, empty properties are

suppressed. Use <option>--all</option>

to show those too. To select specific

properties to show, use

<option>--property=</option>. This

command is intended to be used

whenever computer-parsable output is

required. Use

<command>session-status</command> if

you are looking for formatted

human-readable

output.</para></listitem>

</varlistentry>

<varlistentry>

<term><command>activate</command> <replaceable>ID</replaceable>...</term>

<listitem><para>Activate one or more

sessions. This brings one or more

sessions into the foreground, if

another session is currently in the

foreground on the respective

seat.</para></listitem>

</varlistentry>

<varlistentry>

<term><command>lock-session</command> <replaceable>ID</replaceable>...</term>

<term><command>unlock-session</command> <replaceable>ID</replaceable>...</term>

<listitem><para>Activates/deactivates

the screen lock on one or more

sessions, if the session supports it.

</para></listitem>

</varlistentry>

<varlistentry>

<term><command>lock-sessions</command></term>

<term><command>unlock-sessions</command></term>

<listitem><para>Activates/deactivates

the screen lock on all current

sessions supporting it.

</para></listitem>

</varlistentry>

<varlistentry>

<term><command>terminate-session</command> <replaceable>ID</replaceable>...</term>

<listitem><para>Terminates a session.

This kills all processes of the

session and deallocates all resources

attached to the session.

</para></listitem>

</varlistentry>

<varlistentry>

<term><command>kill-session</command> <replaceable>ID</replaceable>...</term>

<listitem><para>Send a signal to one

or more processes of the session. Use

<option>--kill-who=</option> to select

which process to kill. Use

<option>--signal=</option> to select

the signal to send.</para></listitem>

</varlistentry>

<varlistentry>

<term><command>list-users</command></term>

<listitem><para>List currently logged

in users.</para></listitem>

</varlistentry>

<varlistentry>

<term><command>user-status</command> <replaceable>USER</replaceable>...</term>

<listitem><para>Show terse runtime

status information about one or more

logged in users, followed by the most

recent log data from the journal. This

function is intended to generate

human-readable output. If you are

looking for computer-parsable output,

use <command>show-user</command>

instead. Users may be specified by

their usernames or numeric user IDs.

</para></listitem>

</varlistentry>

<varlistentry>

<term><command>show-user</command> <optional><replaceable>USER</replaceable>...</optional></term>

<listitem><para>Show properties of one

or more users or the manager

itself. If no argument is specified,

properties of the manager will be

shown. If a user is specified,

properties of the user are shown. By

default, empty properties are

suppressed. Use <option>--all</option>

to show those too. To select specific

properties to show, use

<option>--property=</option>. This

command is intended to be used

whenever computer-parsable output is

required. Use

<command>user-status</command> if

you are looking for formatted

human-readable

output.</para></listitem>

</varlistentry>

<varlistentry>

<term><command>enable-linger</command> <replaceable>USER</replaceable>...</term>

<term><command>disable-linger</command> <replaceable>USER</replaceable>...</term>

<listitem><para>Enable/disable user

lingering for one or more users. If

enabled for a specific user, a user

manager is spawned for the user at

boot and kept around after

logouts. This allows users who are not

logged in to run long-running

services.</para></listitem>

</varlistentry>

<varlistentry>

<term><command>terminate-user</command> <replaceable>USER</replaceable>...</term>

<listitem><para>Terminates all

sessions of a user. This kills all

processes of all sessions of the user

and deallocates all runtime resources

attached to the user.

</para></listitem>

</varlistentry>

<varlistentry>

<term><command>kill-user</command> <replaceable>USER</replaceable>...</term>

<listitem><para>Send a signal to all

processes of a user. Use

<option>--signal=</option> to select

the signal to send.</para></listitem>

</varlistentry>

<varlistentry>

<term><command>list-seats</command></term>

<listitem><para>List currently

available seats on the local

system.</para></listitem>

</varlistentry>

<varlistentry>

<term><command>seat-status</command> <replaceable>NAME</replaceable>...</term>

<listitem><para>Show terse runtime

status information about one or more

seats. This function is

intended to generate human-readable

output. If you are looking for

computer-parsable output, use

<command>show-seat</command>

instead.</para></listitem>

</varlistentry>

<varlistentry>

<term><command>show-seat</command> <replaceable>NAME</replaceable>...</term>

<listitem><para>Show properties of one

or more seats or the manager

itself. If no argument is specified,

properties of the manager will be

shown. If a seat is specified,

properties of the seat are shown. By

default, empty properties are

suppressed. Use <option>--all</option>

to show those too. To select specific

properties to show, use

<option>--property=</option>. This

command is intended to be used

whenever computer-parsable output is

required. Use

<command>seat-status</command> if you

are looking for formatted

human-readable

output.</para></listitem>

</varlistentry>

<varlistentry>

<term><command>attach</command> <replaceable>NAME</replaceable> <replaceable>DEVICE</replaceable>...</term>

<listitem><para>Persistently attach

one or more devices to a seat. The

devices should be specified via device

paths in the <filename>/sys</filename>

file system. To create a new seat,

attach at least one graphics card to a

previously unused seat name. Seat

names may consist only of a-z, A-Z,

0-9, <literal>-</literal> and

<literal>_</literal> and must be

prefixed with <literal>seat</literal>.

To drop assignment of a device to a

specific seat, just reassign it to a

different seat, or use

<command>flush-devices</command>.

</para></listitem>

</varlistentry>

<varlistentry>

<term><command>flush-devices</command></term>

<listitem><para>Removes all device

assignments previously created with

<command>attach</command>. After this

call, only automatically generated

seats will remain, and all seat

hardware is assigned to

them.</para></listitem>

</varlistentry>

<varlistentry>

<term><command>terminate-seat</command> <replaceable>NAME</replaceable>...</term>

<listitem><para>Terminates all

sessions on a seat. This kills all

processes of all sessions on the seat

and deallocates all runtime resources

attached to them.</para></listitem>

</varlistentry>

</variablelist>

</refsect1>

<refsect1>

<title>Exit status</title>

<para>On success, 0 is returned, a non-zero failure

code otherwise.</para>

</refsect1>

<xi:include href="less-variables.xml" />

<refsect1>

<title>See Also</title>

<para>

<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,

<citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,

<citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>

</para>

</refsect1>

</refentry>