systemctl shutdown socket

~$ systemctl status systemd-shutdownd.socket
systemd-shutdownd.socket - Delayed Shutdown Socket
   Loaded: loaded (/lib/systemd/system/systemd-shutdownd.socket; static)
   Active: active (listening) since Вт 2014-08-05 12:13:56 MSK; 5h 55min ago
     Docs: man:systemd-shutdownd.service(8)
   Listen: /run/systemd/shutdownd (Datagram)

Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.