# systemd-logind.service(8) - man - phpMan

[SYSTEMD-LOGIND.SERVICE(8)](https://www.chedong.com/phpMan.php/man/SYSTEMD-LOGIND.SERVICE/8/markdown)              systemd-logind.service              [SYSTEMD-LOGIND.SERVICE(8)](https://www.chedong.com/phpMan.php/man/SYSTEMD-LOGIND.SERVICE/8/markdown)



## 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:

       •   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.

       •   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.

       •   Providing **polkit**[1]-based access for users for operations such as system shutdown or
           sleep

       •   Implementing a shutdown/sleep inhibition logic for applications

       •   Handling of power/sleep hardware keys

       •   Multi-seat management

       •   Session switch management

       •   Device access management for users

       •   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)](https://www.chedong.com/phpMan.php/man/systemd/8/markdown) PAM module.

       See [**logind.conf**(5)](https://www.chedong.com/phpMan.php/man/logind.conf/5/markdown) for information about the configuration of this service.

       See [**sd-login**(3)](https://www.chedong.com/phpMan.php/man/sd-login/3/markdown) for information about the basic concepts of logind such as users, sessions
       and seats.

       See [**org.freedesktop.login1**(5)](https://www.chedong.com/phpMan.php/man/org.freedesktop.login1/5/markdown) and [**org.freedesktop.LogControl1**(5)](https://www.chedong.com/phpMan.php/man/org.freedesktop.LogControl1/5/markdown) for information about the
       D-Bus APIs systemd-logind provides.

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

       If you are interested in writing a display manager that makes use of logind, please have look
       at **Writing** **Display** **Managers**[3]. If you are interested in writing a desktop environment that
       makes use of logind, please have look at **Writing** **Desktop** **Environments**[4].

## SEE ALSO
       [**systemd**(1)](https://www.chedong.com/phpMan.php/man/systemd/1/markdown), [**systemd-user-sessions.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-user-sessions.service/8/markdown), [**loginctl**(1)](https://www.chedong.com/phpMan.php/man/loginctl/1/markdown), [**logind.conf**(5)](https://www.chedong.com/phpMan.php/man/logind.conf/5/markdown), **pam**___**[systemd**(8)](https://www.chedong.com/phpMan.php/man/systemd/8/markdown),
       [**sd-login**(3)](https://www.chedong.com/phpMan.php/man/sd-login/3/markdown)

## NOTES
        1. polkit
           <https://www.freedesktop.org/wiki/Software/polkit>

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

        3. Writing Display Managers
           <https://www.freedesktop.org/wiki/Software/systemd/writing-display-managers>

        4. Writing Desktop Environments
           <https://www.freedesktop.org/wiki/Software/systemd/writing-desktop-environments>



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