# who
root       console      Dec 12 08:08
rimmer     pts/0        Dec 11 14:48    (starbug)
pmorph     pts/1        Dec 13 12:31    (bluemidget)
# shutdown -i0 -g300 -y
Shutdown started.    Thu Dec 13 14:51:39 MST 2001

Broadcast Message from root (console) on earth Thu Dec 13 14:51:39...
The system earth will be shut down in 5 minutes 
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Changing to init state 0 - please wait
# 
INIT: New run level: 0
The system is coming down.  Please wait.
System services are now being stopped.
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The system is down.
syncing file systems... done
Program terminated
Type  help  for more information
ok