1 08/22/86  down
 2 
 3 Syntax as a command:  down {time} {back} {reason}
 4 
 5 
 6 Function: schedules an automatic shutdown for a specified time and an
 7 automatic bump of users for N minutes before the time of the shutdown.
 8 At the time of the bump, all interactive users are warned that they
 9 will be logged out in N minutes.  You can use it only in ring 4.
10 
11 
12 Arguments:
13 time
14    is the time to schedule an automatic shutdown.  It is a clock
15    reading acceptable to convert_date_to_binary_.  Enclose in quotes if
16    it contains spaces.  If you omit it, the command displays the
17    current down settings.
18 back
19    is the time announced to users when the system will come back up.
20    Give it in the same form as the time argument.
21 reason
22    is a message that tells users the reason for the shutdown.
23 
24 
25 Notes: N is figured using the value of warning_time, a parameter in
26 the installation_parms segment.  The warning_time parameter in the
27 installation_parms segment is the number of real-time seconds between
28 warning of an automatic logout and the actual logout.  N equals
29 warning_time divided by 60, rounded up to the next whole minute; for
30 example, if the installation_parms segment shows a warning_time value
31 of 6000 seconds, then N will be 100 minutes.
32 
33 When the system is started up, a check is made to see if a down command
34 has been issued that has not yet taken effect.  If one is found and
35 more than 30 minutes remain before it takes effect, the down command is
36 reissued automatically.
37 
38 
39 If absentee is up when you issue this command, an automatic absentee
40 stop is set up for 20 minutes before shutdown.  If absentee is not up
41 when you issue this command, but it is brought up later, the automatic
42 absentee stop is still set up for 20 minutes before shutdown.  If
43 absentee is already being shut down when you issue this command, the
44 shutdown of absentee continues.