#!/bin/bash
#################################################################################
# /etc/cron.15min/autoshutdn RM20070202 
# 
# I run this script every 15 minutes on 192.168.1.4 (box) which is a server
# for printer/scanner shares, backups, and recording/viewing of dvb-t timeshifts.
#
# It checks to see if our work stations (static IP's) are up on and then
# if there are any dvb recording (at) jobs pending and if there is any video to dvd
# processing using our dcript "create-dvd". 
#
# If rick and leila (the workstations) are shutdown, there are no jobs in /var/spool/atjobs
# on box and  the script create-dvd and the ap dvbstream are not running, then the script 
# runs the command [shutdown -h now] Otherwise the script will run repeatedly as as a 
# cron job as long as the four conditions are not met.
#
# With Slackware, in order to run every X minutes/hours you'll need to copy this script 
# to whatever cron directory you choose, e.g. /etc/cron.15min, and then add the following
# lines to /var/spool/cron/crontabs/root:
#
#		 # Run 15 minute cron jobs 24 X 7:
#		 0,15,30,45 * * * * /etc/cron.15min/autoshtdn
#
# You could probably put the executable script anywhere as long as the path in the
# second line above points to the correct location.
#
# It is also a good idea to have logrotate look after the log file /var/log/autoshtdn
# which is created by this script. I add it to the list of log files found before the 
# the first curly brace in /etc/logrotate.d/syslog.
#################################################################################
  
# Create some variables
IP1=192.168.1.2 # rick 
IP2=192.168.1.3 # leila 
QUDIR=/var/spool/atjobs # on box 192.168.1.4


# Test if Rick is up.
# Test1=1 if rick is down.
ping -c1 $IP1 > /dev/null 2>&1

if [ $? -eq 0 ];then
  TEST1=2
else
  TEST1=1
fi

# Test if Leila is up.
# Test2=1 if leila is down.
ping -c1 $IP2 > /dev/null 2>&1

if [ $? -eq 0 ] ; then
  TEST2=2
else
  TEST2=1
fi

# Test to see if there are any timeshifting jobs in /var/spool/atjobs.
# TEST3 will equal "1" if there are no jobs and "2" if there are.
if [ -e $QUDIR/* ] ; then
  TEST3=2
else
  TEST3=1
fi          

# Test to see if [create-dvd] is running
# TEST4 will equal "1" if the script, create-dvd, is not running
ps -A | grep create-dvd > /dev/null 2>&1

if [ $? -eq 0 ] ; then
  TEST4=2
else
  TEST4=1
fi

# Test to see if [dvbstream] is running
# TEST4 will equal "1" if the script, create-dvd, is not running
ps -A | grep dvbstream > /dev/null 2>&1

if [ $? -eq 0 ] ; then
  TEST5=2
else
  TEST5=1
fi


# Now if we have "1", "1", "1", we will shut down the server
if [ $TEST1 -eq 1 -a $TEST2 -eq 1 -a $TEST3 -eq 1 -a $TEST4 -eq 1 -a $TEST5 -eq 1 ] ; then
  echo -e "\n`date` ran autoshutdn script `date`" >> /var/log/autoshtdn
  echo -e "rick=$TEST1, leila=$TEST2, atjobs=$TEST3, create-dvd=$TEST4, dvbstream=$TEST5, shutting down now.\n" >> /var/log/autoshtdn
  shutdown -h now
else
  echo -e "\n`date` ran autoshutdn script `date`" >> /var/log/autoshtdn
  echo -e "rick=$TEST1, leila=$TEST2, atjobs=$TEST3, create-dvd=$TEST4, dvbstream=$TEST5, no shutdown now.\n" >> /var/log/autoshtdn
  # and the script will be run again in 15 minutes
fi

# End of script