Compare old/new TinyDNS zone file

gistfile1.txt

#!/bin/bash

ZONE_FILES=()
NEW_NAMESERVER="" # eg. ns1.sonassihosting.com

for ZONE in ${ZONE_FILES[@]}; do
  TITLE="Testing $ZONE"
  TITLE_LEN=${#TITLE} 
  HEADER=$(for i in $(seq 1 $TITLE_LEN); do echo -n "="; done)
  echo -e "\n$HEADER\n$TITLE\n$HEADER\n"

  grep -vE "^#" $ZONE | ack-grep '^(.)([^:]+):' --output='$1 $2' | while read TYPE RECORD; do
    case $TYPE in
    ".")
    TYPE=
    ;;
    "@")
    TYPE=mx
    ;;
    "+")
    TYPE=a
    ;;
    "C")
    TYPE=cname
    ;;
    ":"|"'")
    TYPE=txt
    ;;
    esac

    [[ "$TYPE" == "" ]] && continue

    OLD=$(dig +short $RECORD $TYPE | tr '[:upper:]' '[:lower:]')
    NEW=$(dig +short $RECORD $TYPE @$NEW_NAMESERVER | tr '[:upper:]' '[:lower:]')

    echo -n "Checking $RECORD ($TYPE) ... "
    [[ "$(echo $OLD | md5sum)" == "$(echo $NEW | md5sum)" ]] && echo "OK" || ( echo -e "ERROR\n  Old: $OLD\n  New: $NEW" )

  done
done