freedns actualization script

#!/bin/sh
##############################################################################
#  application name: dnsactual
#  other files: dnsactual.conf (keeps the last updated ip)
#               dnsactual.log  (register date & time of the actualization)
#  Modified by: Rodolfo Pilas <[email protected]>
#  Original Author: Ernest Danton - Date: 01/29/2007
##############################################################################

#################
# mydomain.com
#################

DNSSTORE='/usr/local/etc/freedns/dnsactual.conf'
DNSLOG='/var/log/freedns.log'

FDCHE='http://freedns.afraid.org/dynamic/check.php'
FDUPD='https://freedns.afraid.org/dynamic/update.php?Z2RA-KEY-GET-FROM-YOUR-ACCOUNTDQ='
WGETOPT='--no-check-certificate --output-file=/dev/null --output-document=/dev/stdout --quiet'

REMOTESTRE=user@remote-server-to-storage-log-OPTIONAL
REMOTEPORT=22

# Create DNSSTORE folder if not exists
if [ ! -d /usr/local/etc/freedns ]; then mkdir -p /usr/local/etc/freedns; fi

if test -f $DNSSTORE; then
   CacheIP=$(cat $DNSSTORE)
fi
if [ "$1" = "-d" ]; then echo "CacheIP: .$CacheIP."; fi
CurreIP=$(/usr/bin/wget $WGETOPT $FDCHE | grep Detected | cut -d : -f 2 | tr -d " ")
if [ "$1" = "-d" ]; then echo "CurreIP: .$CurreIP."; fi
if test "$CurreIP" != "$CacheIP"; then
   # The IP has change
   if [ "$1" = "-d" ]; then echo "Updating http://free.afraid.org with $CurreIP"; fi
   /usr/bin/wget $WGETOPT $FDUPD
   echo `date`  "Updating log with IP " $CurreIP >> $DNSLOG
   echo $CurreIP > $DNSSTORE
   # Optional remote record to have external record of actual IP
   scp -q -P$REMOTEPORT $DNSSTORE $REMOTESTORE:
else
   if [ "$1" = "-d" ]; then echo "No update"; fi
fi

exit 0