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 logind.service(8).
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
¶--version
¶The following commands are understood:
List current sessions.
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.
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.
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.
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.
Activates/deactivates the screen lock on all current sessions supporting it.
ID
...¶Terminates a session. This kills all processes of the session and deallocates all resources attached to the 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.
List currently logged in users.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.