loginctl man page on Kali

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LOGINCTL(1)			   loginctl			   LOGINCTL(1)

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.

       --value
	   When printing properties with show, only print the value, and skip
	   the property name and "=".

       -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 is shown for the user of the
	   session of the caller. This function is intended to generate
	   human-readable output. If you are looking for computer-parsable
	   output, use show-user instead.

       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.

	   See also KillUserProcesses= setting in logind.conf(5).

       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.

EXAMPLES
       Example 1. Querying user status

	   $ loginctl user-status
	   fatima (1005)
		      Since: Sat 2016-04-09 14:23:31 EDT; 54min ago
		      State: active
		   Sessions: 5 *3
		       Unit: user-1005.slice
			     ├─user@1005.service
			       ...
			     ├─session-3.scope
			       ...
			     └─session-5.scope
			       ├─3473 login -- fatima
			       └─3515 -zsh

	   Apr 09 14:40:30 laptop login[2325]: pam_unix(login:session):
				  session opened for user fatima by LOGIN(uid=0)
	   Apr 09 14:40:30 laptop login[2325]: LOGIN ON tty3 BY fatima

       There are two sessions, 3 and 5. Session 3 is a graphical session,
       marked with a star. The tree of processing including the two
       corresponding scope units and the user manager unit are shown.

ENVIRONMENT
       $SYSTEMD_PAGER
	   Pager to use when --no-pager is not given; overrides $PAGER. If
	   neither $SYSTEMD_PAGER nor $PAGER are set, a set of well-known
	   pager implementations are tried in turn, including less(1) and
	   more(1), until one is found. If no pager implementation is
	   discovered no pager is invoked. Setting this environment variable
	   to an empty string or the value "cat" is equivalent to passing
	   --no-pager.

       $SYSTEMD_LESS
	   Override the options passed to less (by default "FRSXMK").

       $SYSTEMD_LESSCHARSET
	   Override the charset passed to less (by default "utf-8", if the
	   invoking terminal is determined to be UTF-8 compatible).

SEE ALSO
       systemd(1), systemctl(1), systemd-logind.service(8), logind.conf(5)

systemd 236							   LOGINCTL(1)
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