shut_down

<B>Digital的Unix操作系统VAX 4.2源码</B>

#!/bin/sh5
########################################################################
#
#			Copyright (c) 1988, 1989 by
#		Digital Equipment Corporation, Maynard, MA
#			All rights reserved.
#
#	This software is furnished under a license and may be used and
#	copied  only  in accordance with the terms of such license and
#	with the  inclusion  of  the  above  copyright  notice.   This
#	software  or  any  other copies thereof may not be provided or
#	otherwise made available to any other person.  No title to and
#	ownership of the software is hereby transferred.		
#
#	The information in this software is subject to change  without
#	notice  and should not be construed as a commitment by Digital
#	Equipment Corporation.					
#
#	Digital assumes no responsibility for the use  or  reliability
#	of its software on equipment which is not supplied by Digital.
#
#	SCCSID = "@(#)shut_down	4.1	(ULTRIX)	7/27/90"
#
#	000	Jonathan Wallace	1-Jun-1990
#
########################################################################
#
#
trap 'exit' 1 2 3 18
LL="
"
FLAG=$1

case $FLAG in
-r )
	PROCEDURE_NAME="*** System Reboot Procedure ***"
	COMMAND1="reboot"
	COMMAND2="reboot"
	;;
* )
	PROCEDURE_NAME="*** System Shutdown Procedure ***"
	COMMAND1="shutdown"
	COMMAND2="shut down"
	;;
esac

clear
while true
do
	while true
	do
		echo "
$PROCEDURE_NAME

How many minutes delay do you want until system ${COMMAND1}? [1]: \c"

		read DELAY
		case $DELAY in
		"" )
			DELAY="+1"
			;;
		[1-9] | [1-9][0-9] | [1-9][0-9][0-9] )
			DELAY="+$DELAY"
			;;
		* )
			clear
			echo "
Sorry, '$DELAY' is not a valid response."
			continue
			;;
		esac

		break
	done

	echo "
If you want a message displayed to users explaining the reason
for the system shutdown, enter it below.   The message text is
limited to one line.  Type  <RETURN>  without typing a message
if you do not want a shutdown message displayed:
"
	read MESSAGE

	while true
	do
		echo "
Are you sure you want to ${COMMAND2} the system? (y/n) [n]: \c"
		read resp
		case $resp in
		"" | [Nn]* )
			echo "${LL}${LL}System will not be shut down!"
			echo "${LL}Press <RETURN> to continue: \c"
			read resp
			break 2
			;;
		[Yy]* )
			echo "${LL}${LL}SYSTEM SHUTDOWN PROCESS INVOKED!"
			/etc/shutdown $FLAG $DELAY "$MESSAGE"
			case $? in
			0 )
				;;
			* )
				echo "ERROR trying to invoke /etc/shutdown command."
				echo "System will not be shut down!"
				;;
			esac
			echo "${LL}Press <RETURN> to continue: \c"
			read resp
			break 2
			;;
		* )
			;;
		esac
	done
done