#!/bin/sh
# zeroloadoff		autopoweroff when load zero
#		Must run by root (halt/poweroff)
#

# 0.01  6/1/2003 first version (autopoweroff reduced)
# 0.02  9/2/2003 sleep 30 before check
# 0.03 16/2/2003 knoppix & all in "en"

#------------------------------------------------------------------------------

function message () {
	echo "`date '+%b %d %H:%M:%S'` autopoweroff: $*"
	logger -p daemon.info -t zeroloadoff -- "$*"	# Send to daemon.log
}

message "monitorizing loadavg..."

# ENDLESS LOOP
while true
do
    # WAIT BEFORE CHECK/RETRY
    sleep 30

    # WAIT FAST LOAD AVG == ZERO
    if [ "`awk '{print $1}' /proc/loadavg`" == "0.00" ]
    then
	break
    fi

    message "Not yet... `cat /proc/loadavg`"
done



# LETS POWEROFF
message "loadavg==0.00 Poweroff system"

# KNOPPIX FROM CD does not really poweroff so we have to do it by hand...
if [ -e /KNOPPIX/bin/ash ]
then
    echo "Sending processes the TERM signal"
    killall5 -15
    sleep 5
    echo "Sending processes the KILL signal"
    killall5 -9
    echo "Unmounting file systems"
    swapoff -a
    umount -arvf
    #rmmod -a
    echo ""
    echo "POWER OFF"
    halt -fp	# Really poweroff
fi

poweroff
#sudo /sbin/poweroff	# Use sudo for no root users


# NO POWEROFF !
sleep 30
message "WARNING: PC can not selfpoweroff..."
message " - Or you have not permissions for poweroff"
message " - Or apm support is not active"
message " - Or there is not apm support in kernel (recompile it)"