Asterisk watchdog script

asterisk_watchdog.sh

#!/bin/bash -x

DIR=/tmp/watchdog

# Create dir if it doesn't exist
if [ ! -d $DIR ]; then
  mkdir $DIR
fi

cd $DIR

# Save current registration times
/usr/sbin/asterisk -rx "sip show registry" | grep "Registered" | cut -b 92- > current

# If last exists, compare current to last
if [ -f last ]; then
  cmp current last

# If they match, restart Asterisk
  if [ $? == 0 ]; then
    /etc/init.d/asterisk restart
  fi
fi

rm -f last
mv current last

asterisk_watchdog_installer.sh

# Add asterisk_watchdog.sh to cron
if ! grep -q "0,10,20,30,40,50 * * * *  /etc/asterisk/asterisk_watchdog.sh"  /var/spool/cron/root; then
        echo "0,10,20,30,40,50 * * * *  /etc/asterisk/asterisk_watchdog.sh">>/var/spool/cron/root
fi