Linux Sehedule Shutdown with message for save data of the users

[root@localhost ~]# shutdown +5 "*** Server is going DOWN due to power failure !!! Please save all your work ***"
shutdown +5 "*** Server is going DOWN for  due to power failure ! Please save all your work ***"

Broadcast message from root@localhost.localdomain
        (/dev/pts/0) at 0:08 ...

The system is going down for maintenance in 5 minutes!
*** Server is going DOWN  test! Please save all your work ***