-To shut the system down and bring it up single user
-the super-user may send the initialization process a TERM (terminate)
-signal by `kill 1'; see
-.IR init (8).
-To force
-.I init
-to close and open terminals
-according to what is currently in
-/etc/ttys
-use `kill \-HUP 1' (sending a hangup, signal 1).
-.PP