[tomasz@203857 ttyid:0 nie mar 24 19:32:34 ~]$ shutdown 2 "System shutdown will occur in 120s."
Shutdown scheduled for Sun 2019-03-24 19:34:55 CET, use 'shutdown -c' to cancel.
[tomasz@203857 ttyid:0 nie mar 24 19:32:55 ~]$ loginctl
SESSION  UID USER   SEAT  TTY
      2 1000 tomasz seat0 tty2
      5 1003 atomek seat0 tty3

2 sessions listed.