Provided by: systemd_229-4ubuntu21.31_amd64 
NAME
loginctl - Control the systemd login manager
SYNOPSIS
loginctl [OPTIONS...] {COMMAND} [NAME...]
DESCRIPTION
loginctl may be used to introspect and control the state of the systemd(1) login manager systemd- logind.service(8).
OPTIONS
The following options are understood:
--no-ask-password
Do not query the user for authentication for privileged operations.
-p, --property=
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 "Sessions". If specified more than once, all properties with the specified names are shown.
-a, --all
When showing session/user/seat properties, show all properties regardless of whether they are set or
not.
-l, --full
Do not ellipsize process tree entries.
--kill-who=
When used with kill-session, choose which processes to kill. Must be one of leader, or all to select
whether to kill only the leader process of the session or all processes of the session. If omitted,
defaults to all.
-s, --signal=
When used with kill-session or kill-user, choose which signal to send to selected processes. Must be
one of the well known signal specifiers, such as SIGTERM, SIGINT or SIGSTOP. If omitted, defaults to
SIGTERM.
-n, --lines=
When used with user-status and session-status, controls the number of journal lines to show, counting
from the most recent ones. Takes a positive integer argument. Defaults to 10.
-o, --output=
When used with user-status and session-status, controls the formatting of the journal entries that
are shown. For the available choices, see journalctl(1). Defaults to "short".
-H, --host=
Execute the operation remotely. Specify a hostname, or a username and hostname separated by "@", to
connect to. The hostname may optionally be suffixed by a container name, separated by ":", which
connects directly to a specific container on the specified host. This will use SSH to talk to the
remote machine manager instance. Container names may be enumerated with machinectl -H HOST.
-M, --machine=
Execute operation on a local container. Specify a container name to connect to.
--no-pager
Do not pipe output into a pager.
--no-legend
Do not print the legend, i.e. column headers and the footer with hints.
-h, --help
Print a short help text and exit.
--version
Print a short version string and exit.
COMMANDS
The following commands are understood:
Session Commands
list-sessions
List current sessions.
session-status [ID...]
Show terse runtime status information about one or more sessions, followed by the most recent log
data from the journal. Takes one or more session identifiers as parameters. If no session identifiers
are passed, the status of the caller's session is shown. This function is intended to generate
human-readable output. If you are looking for computer-parsable output, use show-session instead.
show-session [ID...]
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 --all to show those too. To select specific
properties to show, use --property=. This command is intended to be used whenever computer-parsable
output is required. Use session-status if you are looking for formatted human-readable output.
activate [ID]
Activate a session. This brings a session into the foreground if another session is currently in the
foreground on the respective seat. Takes a session identifier as argument. If no argument is
specified, the session of the caller is put into foreground.
lock-session [ID...], unlock-session [ID...]
Activates/deactivates the screen lock on one or more sessions, if the session supports it. Takes one
or more session identifiers as arguments. If no argument is specified, the session of the caller is
locked/unlocked.
lock-sessions, unlock-sessions
Activates/deactivates the screen lock on all current sessions supporting it.
terminate-session ID...
Terminates a session. This kills all processes of the session and deallocates all resources attached
to the session.
kill-session ID...
Send a signal to one or more processes of the session. Use --kill-who= to select which process to
kill. Use --signal= to select the signal to send.
User Commands
list-users
List currently logged in users.
user-status [USER...]
Show terse runtime status information about one or more logged in users, followed by the most recent
log data from the journal. Takes one or more user names or numeric user IDs as parameters. If no
parameters are passed, the status of the caller's user is shown. This function is intended to
generate human-readable output. If you are looking for computer-parsable output, use show-user
instead. Users may be specified by their usernames or numeric user IDs.
show-user [USER...]
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 --all to show those too. To select specific properties to show,
use --property=. This command is intended to be used whenever computer-parsable output is required.
Use user-status if you are looking for formatted human-readable output.
enable-linger [USER...], disable-linger [USER...]
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. Takes one or more user names or numeric UIDs as argument. If no
argument is specified, enables/disables lingering for the user of the session of the caller.
terminate-user USER...
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.
kill-user USER...
Send a signal to all processes of a user. Use --signal= to select the signal to send.
Seat Commands
list-seats
List currently available seats on the local system.
seat-status [NAME...]
Show terse runtime status information about one or more seats. Takes one or more seat names as
parameters. If no seat names are passed the status of the caller's session's seat is shown. This
function is intended to generate human-readable output. If you are looking for computer-parsable
output, use show-seat instead.
show-seat [NAME...]
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 --all to show those too. To select specific properties to show,
use --property=. This command is intended to be used whenever computer-parsable output is required.
Use seat-status if you are looking for formatted human-readable output.
attach NAME DEVICE...
Persistently attach one or more devices to a seat. The devices should be specified via device paths
in the /sys 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, "-" and "_" and must be prefixed with
"seat". To drop assignment of a device to a specific seat, just reassign it to a different seat, or
use flush-devices.
flush-devices
Removes all device assignments previously created with attach. After this call, only automatically
generated seats will remain, and all seat hardware is assigned to them.
terminate-seat NAME...
Terminates all sessions on a seat. This kills all processes of all sessions on the seat and
deallocates all runtime resources attached to them.
EXIT STATUS
On success, 0 is returned, a non-zero failure code otherwise.
ENVIRONMENT
$SYSTEMD_PAGER
Pager to use when --no-pager is not given; overrides $PAGER. Setting this to an empty string or the
value "cat" is equivalent to passing --no-pager.
$SYSTEMD_LESS
Override the default options passed to less ("FRSXMK").
SEE ALSO
systemd(1), systemctl(1), systemd-logind.service(8), logind.conf(5)