systemd-user-sessions.service, systemd-user-sessions — Permit user logins after boot, prohibit user logins at shutdown
systemd-user-sessions.service
/usr/lib/systemd/systemd-user-sessions
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.