Update ddclient

An older script that I use on OpenBSD to update ddclient hostnames. The script should run with minor modifications on Linux.



MAILSUBJECT="DDclient update"

IP=`ifconfig $INTF | grep "inet " | grep -v inet6 | awk '{print $2}' |
sed 's/addr://'`

if [ -f $IPFILE ]; then
 OLDIP="`cat $IPFILE`"

if [ "$IP" != "$OLDIP" ]; then
 echo $IP > $IPFILE
 /usr/bin/logger -t ipcheck_ddclient new IP address -- changed to $IP
 /sbin/ifconfig -a | mail -s $MAILSUBJECT $MAILRCPT
 /usr/local/sbin/ddclient -daemon=0 -syslog -use=ip -ip=$IP

If you are unable to get your public IP from a local interface then you can use dyndns.org.

wget -q -O - checkip.dyndns.org|sed -e 's/.*Current IP Address: //' -e 's/<.*$//'

2 thoughts on “Update ddclient

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