Provided by: systemd_204-5ubuntu20.31_amd64 

NAME
systemd-user-sessions.service, systemd-user-sessions - Permit user logins after boot, prohibit user
logins at shutdown
SYNOPSIS
systemd-user-sessions.service
/usr/lib/systemd/systemd-user-sessions
DESCRIPTION
systemd-user-sessions.service is a service that controls user logins. After basic system initialization
is complete it removes /run/nologin, thus permitting logins. Before system shutdown it creates
/run/nologin, thus prohibiting further logins. At the same time it also kills all user processes, so that
system shutdown may proceed without any remaining user processes around.
SEE ALSO
systemd(1), systemd-logind.service(8), pam_nologin(8)
systemd 204 SYSTEMD-USER-SESSIONS.SERVICE(8)