mirror of
https://github.com/systemd/systemd
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430 lines
18 KiB
XML
430 lines
18 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
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<refentry id="loginctl" conditional='ENABLE_LOGIND'
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>loginctl</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>loginctl</refentrytitle>
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<manvolnum>1</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>loginctl</refname>
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<refpurpose>Control the systemd login manager</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>loginctl</command>
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<arg choice="opt" rep="repeat">OPTIONS</arg>
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<arg choice="req">COMMAND</arg>
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<arg choice="opt" rep="repeat">NAME</arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>loginctl</command> may be used to introspect and
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control the state of the
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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login manager
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<citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</refsect1>
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<refsect1>
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<title>Commands</title>
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<para>The following commands are understood:</para>
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<refsect2><title>Session Commands</title><variablelist>
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<varlistentry>
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<term><command>list-sessions</command></term>
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<listitem><para>List current sessions.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>session-status</command> <optional><replaceable>ID</replaceable>…</optional></term>
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<listitem><para>Show terse runtime status information about
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one or more sessions, followed by the most recent log data
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from the journal. Takes one or more session identifiers as
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parameters. If no session identifiers are passed, the status of
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the caller's session is shown. This function is intended to
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generate human-readable output. If you are looking for
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computer-parsable output, use <command>show-session</command>
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instead.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>show-session</command> <optional><replaceable>ID</replaceable>…</optional></term>
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<listitem><para>Show properties of one or more sessions or the
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manager itself. If no argument is specified, properties of the
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manager will be shown. If a session ID is specified,
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properties of the session are shown. By default, empty
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properties are suppressed. Use <option>--all</option> to show
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those too. To select specific properties to show, use
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<option>--property=</option>. This command is intended to be
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used whenever computer-parsable output is required. Use
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<command>session-status</command> if you are looking for
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formatted human-readable output.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>activate</command> <optional><replaceable>ID</replaceable></optional></term>
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<listitem><para>Activate a session. This brings a session into
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the foreground if another session is currently in the
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foreground on the respective seat. Takes a session identifier
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as argument. If no argument is specified, the session of the
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caller is put into foreground.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>lock-session</command> <optional><replaceable>ID</replaceable>…</optional></term>
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<term><command>unlock-session</command> <optional><replaceable>ID</replaceable>…</optional></term>
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<listitem><para>Activates/deactivates the screen lock on one
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or more sessions, if the session supports it. Takes one or
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more session identifiers as arguments. If no argument is
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specified, the session of the caller is locked/unlocked.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>lock-sessions</command></term>
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<term><command>unlock-sessions</command></term>
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<listitem><para>Activates/deactivates the screen lock on all
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current sessions supporting it. </para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>terminate-session</command> <replaceable>ID</replaceable>…</term>
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<listitem><para>Terminates a session. This kills all processes of the session and deallocates all
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resources attached to the session. If the argument is specified as empty string the session invoking
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the command is terminated.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>kill-session</command> <replaceable>ID</replaceable>…</term>
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<listitem><para>Send a signal to one or more processes of the session. Use
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<option>--kill-who=</option> to select which process to kill. Use <option>--signal=</option> to
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select the signal to send. If the argument is specified as empty string the signal is sent to the
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session invoking the command.</para></listitem>
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</varlistentry>
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</variablelist></refsect2>
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<refsect2><title>User Commands</title><variablelist>
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<varlistentry>
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<term><command>list-users</command></term>
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<listitem><para>List currently logged in users.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>user-status</command> <optional><replaceable>USER</replaceable>…</optional></term>
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<listitem><para>Show terse runtime status information about
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one or more logged in users, followed by the most recent log
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data from the journal. Takes one or more user names or numeric
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user IDs as parameters. If no parameters are passed, the status
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is shown for the user of the session of the caller. This
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function is intended to generate human-readable output. If you
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are looking for computer-parsable output, use
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<command>show-user</command> instead.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>show-user</command> <optional><replaceable>USER</replaceable>…</optional></term>
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<listitem><para>Show properties of one or more users or the
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manager itself. If no argument is specified, properties of the
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manager will be shown. If a user is specified, properties of
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the user are shown. By default, empty properties are
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suppressed. Use <option>--all</option> to show those too. To
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select specific properties to show, use
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<option>--property=</option>. This command is intended to be
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used whenever computer-parsable output is required. Use
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<command>user-status</command> if you are looking for
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formatted human-readable output.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>enable-linger</command> <optional><replaceable>USER</replaceable>…</optional></term>
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<term><command>disable-linger</command> <optional><replaceable>USER</replaceable>…</optional></term>
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<listitem><para>Enable/disable user lingering for one or more
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users. If enabled for a specific user, a user manager is
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spawned for the user at boot and kept around after logouts.
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This allows users who are not logged in to run long-running
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services. Takes one or more user names or numeric UIDs as
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argument. If no argument is specified, enables/disables
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lingering for the user of the session of the caller.</para>
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<para>See also <varname>KillUserProcesses=</varname> setting in
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<citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>terminate-user</command> <replaceable>USER</replaceable>…</term>
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<listitem><para>Terminates all sessions of a user. This kills all processes of all sessions of the
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user and deallocates all runtime resources attached to the user. If the argument is specified as
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empty string the sessions of the user invoking the command are terminated.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>kill-user</command> <replaceable>USER</replaceable>…</term>
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<listitem><para>Send a signal to all processes of a user. Use <option>--signal=</option> to select
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the signal to send. If the argument is specified as empty string the signal is sent to the sessions
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of the user invoking the command.</para></listitem>
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</varlistentry>
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</variablelist></refsect2>
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<refsect2><title>Seat Commands</title><variablelist>
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<varlistentry>
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<term><command>list-seats</command></term>
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<listitem><para>List currently available seats on the local
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system.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>seat-status</command> <optional><replaceable>NAME</replaceable>…</optional></term>
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<listitem><para>Show terse runtime status information about
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one or more seats. Takes one or more seat names as parameters.
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If no seat names are passed the status of the caller's
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session's seat is shown. This function is intended to generate
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human-readable output. If you are looking for
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computer-parsable output, use <command>show-seat</command>
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instead.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>show-seat</command> <optional><replaceable>NAME</replaceable>…</optional></term>
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<listitem><para>Show properties of one or more seats or the
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manager itself. If no argument is specified, properties of the
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manager will be shown. If a seat is specified, properties of
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the seat are shown. By default, empty properties are
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suppressed. Use <option>--all</option> to show those too. To
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select specific properties to show, use
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<option>--property=</option>. This command is intended to be
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used whenever computer-parsable output is required. Use
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<command>seat-status</command> if you are looking for
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formatted human-readable output.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>attach</command> <replaceable>NAME</replaceable> <replaceable>DEVICE</replaceable>…</term>
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<listitem><para>Persistently attach one or more devices to a
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seat. The devices should be specified via device paths in the
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<filename>/sys/</filename> file system. To create a new seat,
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attach at least one graphics card to a previously unused seat
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name. Seat names may consist only of a–z, A–Z, 0–9,
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<literal>-</literal> and <literal>_</literal> and must be
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prefixed with <literal>seat</literal>. To drop assignment of a
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device to a specific seat, just reassign it to a different
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seat, or use <command>flush-devices</command>.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>flush-devices</command></term>
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<listitem><para>Removes all device assignments previously
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created with <command>attach</command>. After this call, only
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automatically generated seats will remain, and all seat
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hardware is assigned to them.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>terminate-seat</command> <replaceable>NAME</replaceable>…</term>
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<listitem><para>Terminates all sessions on a seat. This kills
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all processes of all sessions on the seat and deallocates all
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runtime resources attached to them.</para></listitem>
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</varlistentry>
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</variablelist></refsect2>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following options are understood:</para>
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<variablelist>
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<varlistentry>
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<term><option>--no-ask-password</option></term>
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<listitem><para>Do not query the user for authentication for
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privileged operations.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-p</option></term>
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<term><option>--property=</option></term>
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<listitem><para>When showing session/user/seat properties,
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limit display to certain properties as specified as argument.
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If not specified, all set properties are shown. The argument
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should be a property name, such as
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<literal>Sessions</literal>. If specified more than once, all
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properties with the specified names are
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shown.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--value</option></term>
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<listitem><para>When showing session/user/seat properties,
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only print the value, and skip the property name and
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<literal>=</literal>.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-a</option></term>
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<term><option>--all</option></term>
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<listitem><para>When showing session/user/seat properties,
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show all properties regardless of whether they are set or
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not.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-l</option></term>
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<term><option>--full</option></term>
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<listitem><para>Do not ellipsize process tree entries.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--kill-who=</option></term>
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<listitem><para>When used with
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<command>kill-session</command>, choose which processes to
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kill. Must be one of <option>leader</option>, or
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<option>all</option> to select whether to kill only the leader
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process of the session or all processes of the session. If
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omitted, defaults to <option>all</option>.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-s</option></term>
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<term><option>--signal=</option></term>
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<listitem><para>When used with <command>kill-session</command> or <command>kill-user</command>,
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choose which signal to send to selected processes. Must be one of the well known signal specifiers,
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such as <constant>SIGTERM</constant>, <constant>SIGINT</constant> or <constant>SIGSTOP</constant>.
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If omitted, defaults to <constant>SIGTERM</constant>.</para>
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<para>The special value <literal>help</literal> will list the known values and the program will exit
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immediately, and the special value <literal>list</literal> will list known values along with the
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numerical signal numbers and the program will exit immediately.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-n</option></term>
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<term><option>--lines=</option></term>
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<listitem><para>When used with <command>user-status</command>
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and <command>session-status</command>, controls the number of
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journal lines to show, counting from the most recent ones.
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Takes a positive integer argument. Defaults to 10.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-o</option></term>
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<term><option>--output=</option></term>
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<listitem><para>When used with <command>user-status</command>
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and <command>session-status</command>, controls the formatting
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of the journal entries that are shown. For the available
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choices, see
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<citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>.
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Defaults to <literal>short</literal>.</para></listitem>
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</varlistentry>
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<xi:include href="user-system-options.xml" xpointer="host" />
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<xi:include href="user-system-options.xml" xpointer="machine" />
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<xi:include href="standard-options.xml" xpointer="no-pager" />
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<xi:include href="standard-options.xml" xpointer="no-legend" />
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<xi:include href="standard-options.xml" xpointer="help" />
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<xi:include href="standard-options.xml" xpointer="version" />
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Exit status</title>
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<para>On success, 0 is returned, a non-zero failure code
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otherwise.</para>
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</refsect1>
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<refsect1>
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<title>Examples</title>
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<example>
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<title>Querying user status</title>
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<programlisting>$ loginctl user-status
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fatima (1005)
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Since: Sat 2016-04-09 14:23:31 EDT; 54min ago
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State: active
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Sessions: 5 *3
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Unit: user-1005.slice
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├─user@1005.service
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…
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├─session-3.scope
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…
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└─session-5.scope
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├─3473 login -- fatima
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└─3515 -zsh
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Apr 09 14:40:30 laptop login[2325]: pam_unix(login:session):
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session opened for user fatima by LOGIN(uid=0)
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Apr 09 14:40:30 laptop login[2325]: LOGIN ON tty3 BY fatima
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</programlisting>
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<para>There are two sessions, 3 and 5. Session 3 is a graphical session,
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marked with a star. The tree of processing including the two corresponding
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scope units and the user manager unit are shown.</para>
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</example>
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</refsect1>
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|
||
<xi:include href="common-variables.xml" />
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||
<refsect1>
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||
<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>
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</para>
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</refsect1>
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</refentry>
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