#!/bin/sh
# Shutdown des Systems, wenn niemand angemeldet...
# /etc/crontab: */15 * * * * root /scripts/auto-shutdown.sh

echo "Green-IT Auto-Shutdown"

# Pruefe Uptime des Systems..
upSeconds="$(cat /proc/uptime | grep -o '^[0-9]\+')"
upMins=$((${upSeconds} / 60))
[ "${upMins}" -lt "30" ] && echo " Systemuptime unter 30 Minuten! Abruch." && exit 0

echo " Online Users:"
LOGINS=`lsof |awk '{if ($3 !~ /^root$|^USER$|^avahi$|^ntp$|^daemon$|^statd$|^haldaemon$|^messagebus$|^nobody$|^postfix$|^www-data$/) print $3}'|sort |uniq`
echo "  `who -s`"
echo "  $LOGINS"

RUSER=`who -u`
if [ -z "$RUSER" ] ; then
        # Logins
        LOGINS=`lsof |awk '{if ($3 !~ /^root$|^USER$|^avahi$|^ntp$|^daemon$|^statd$|^haldaemon$|^messagebus$|^nobody$|^postfix$|^www-data$/) print $3}'|sort |uniq |wc -l`
        if [ $LOGINS = "0" ] ; then
                touch /users-offline
                echo " $LOGINS Benutzer angemeldet, PowerOFF."
                #sendemail -f `hostname`@domain.net -t myuser@domain.net -u PowerOFF -m "Keine Benutzer angemeldet, PowerOFF" -s mail.domain.net
                poweroff
	fi
else
	touch /users-online
fi

exit 0