systemd-user-sessions.service(8) [v7 man page]

SYSTEMD-USER-SESSIONS.SERVICE(8)			   systemd-user-sessions.service			  SYSTEMD-USER-SESSIONS.SERVICE(8)

NAME

       systemd-user-sessions.service, systemd-user-sessions - Permit user logins after boot, prohibit user logins at shutdown

SYNOPSIS

       systemd-user-sessions.service

       /lib/systemd/systemd-user-sessions

DESCRIPTION

       systemd-user-sessions.service is a service that controls user logins through pam_nologin(8). After basic system initialization is complete,
       it removes /run/nologin, thus permitting logins. Before system shutdown, it creates /run/nologin, thus prohibiting further logins.

SEE ALSO

       systemd(1), systemd-logind.service(8), pam_nologin(8)

systemd 237													  SYSTEMD-USER-SESSIONS.SERVICE(8)

SYSTEMD-LOGIND.SERVICE(8)                                     systemd-logind.service                                     SYSTEMD-LOGIND.SERVICE(8)

NAME

       systemd-logind.service, systemd-logind - Login manager

SYNOPSIS

       systemd-logind.service

       /lib/systemd/systemd-logind

DESCRIPTION

       systemd-logind is a system service that manages user logins. It is responsible for:

       o   Keeping track of users and sessions, their processes and their idle state. This is implemented by allocating a systemd slice unit for
           each user below user.slice, and a scope unit below it for each concurrent session of a user. Also, a per-user service manager is
           started as system service instance of user@.service for each logged in user.

       o   Generating and managing session IDs. If auditing is available and an audit session ID is already set for a session, then this ID is
           reused as the session ID. Otherwise, an independent session counter is used.

       o   Providing PolicyKit-based access for users for operations such as system shutdown or sleep

       o   Implementing a shutdown/sleep inhibition logic for applications

       o   Handling of power/sleep hardware keys

       o   Multi-seat management

       o   Session switch management

       o   Device access management for users

       o   Automatic spawning of text logins (gettys) on virtual console activation and user runtime directory management

       User sessions are registered with logind via the pam_systemd(8) PAM module.

       See logind.conf(5) for information about the configuration of this service.

       See sd-login(3) for information about the basic concepts of logind such as users, sessions and seats.

       See the logind D-Bus API Documentation[1] for information about the APIs systemd-logind provides.

       For more information on the inhibition logic see the Inhibitor Lock Developer Documentation[2].

SEE ALSO

       systemd(1), systemd-user-sessions.service(8), loginctl(1), logind.conf(5), pam_systemd(8) sd-login(3)

NOTES

        1. logind D-Bus API Documentation
           https://www.freedesktop.org/wiki/Software/systemd/logind

        2. Inhibitor Lock Developer Documentation
           https://www.freedesktop.org/wiki/Software/systemd/inhibit

systemd 237                                                                                                              SYSTEMD-LOGIND.SERVICE(8)