loginctl — Control the systemd login manager
loginctl [OPTIONS...] {COMMAND} [NAME...]
loginctl may be used to introspect and control the state of the systemd(1) login manager systemd-logind.service(8).
The following options are understood:
--help
, -h
Prints a short help text and exits.
--version
Prints a short version string and exits.
--property=
, -p
When showing
session/user 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.
--all
, -a
When showing unit/job/manager properties, show all properties regardless whether they are set or not.
--no-pager
Do not pipe output into a pager.
--no-ask-password
Don't query the user for authentication for privileged operations.
--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
.
--signal=
, -s
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
.
-H
, --host
Execute operation remotely. Specify a hostname, or username and hostname separated by @, to connect to. This will use SSH to talk to the remote login manager instance.
-P
, --privileged
Acquire privileges via PolicyKit before executing the operation.
The following commands are understood:
List current sessions.
Show terse runtime status information about one or more sessions. This function is intended to generate human-readable output. If you are looking for computer-parsable output, use show-session instead.
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 is 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 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.
Activates/deactivates the screen lock on one or more sessions, if the session supports it.
Activate the screen lock on all current sessions supporting it.
Terminates a session. This kills all processes of the session and deallocates all resources attached to the session.
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.
List currently logged in users.
Show terse runtime status information about one or more logged in users. 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 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 is 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/disable user lingering for one or more users. If enabled for a specific user a user manager is spawned for him/her at boot, and kept around after logouts. This allows users who aren't logged in to run long-running services.
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.
Send a signal to all
processes of a user. Use
--signal=
to select
the signal to send.
List currently available seats on the local system.
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 show-seat instead.
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.
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.
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.
Terminates all sessions on a seat. This kills all processes of all sessions on a seat and deallocates all runtime resources attached to them.