Provided by: systemd_229-4ubuntu21.31_amd64 bug

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)