#!/bin/bash
# A simple script that verifies the ip address
# I run it every hour via cron
#       0 * * * * /[path]/ipaddress.sh

# Path and name of a "master" file that contains the value to check for
# Create this file namually, once, using the command "hostname -I >/[path]/ipaddress.master"
checkFile="/tmp/ipaddress.master"

if [ -f "$checkFile" ]; then
  checkString=$(/bin/hostname -I)
  #echo checkString: $checkString
  countCheck=$(/bin/grep -ixc "$checkString" "$checkFile")
  #echo countCheck: $countCheck
  if [ $countCheck -eq 0 ]; then
    #Schedule a reboot in 5 minutes to reaquire the ip address
    /sbin/shutdown -r 5
  fi
else
  echo Unable to find the checkFile: [$checkFile]
fi

#EoF