[root@minbar /root]# uptime
  8:58pm  up 401 days, 21:29,  3 users,  load average: 0.00, 0.00,
  0.00
[root@minbar /root]# halt

Broadcast message from root (pts/4) Mon Dec 10 20:58:46 2001...

The system is going down for system halt NOW !!