DuckDNS-localip.sh

#!/bin/bash
# Get your token from DuckDNS.org
TOKEN="YOUR-TOKEN-HERE"

# Your domains as a list.
domains=("DOMAIN1" "DOMAIN2")

# Let the code do its thing.
LOCALIP="$(ifconfig wlan0 | grep "inet addr" | cut -d ':' -f 2 | cut -d ' ' -f 1)"
echo "Local IP: $LOCALIP"
for DOMAIN in "${domains[@]}"
do
        curl "https://www.duckdns.org/update?domains=$DOMAIN&token=$TOKEN&ip=$LOCALIP"
        echo " $DOMAIN"
done