noip.com cli update script

noip-update.sh

#!/bin/bash

# Updates ip address in the noip DDNS serivce.
# Assumes curl + gnu tools

# Param descriptions taken from API docs.
# http://www.noip.com/integrate/request

#Config

TARGETNIC="wlan0"
#The IP address to which the host(s) will be set. 
#If no IP address is supplied the WAN address connecting to our system will be used. 
#Clients behind NAT, for example, would not need to supply an IP address
MYIP="$(ifconfig $TARGETNIC | grep inet | awk '{print $2}' | sed 's/addr://')"
#Username and password associated with the hosts that are to be updated.
#No-IP [can] use an email address as the username. Email addresses will be no longer than 50 characters.
NOIPUSER="your-username"
NOIPPASS="your password"
#The hostname(s) (host.domain.com) or group(s) (group_name) to be updated . 
#If updating multiple hostnames or groups use a comma separated list. 
NOIPHOST="noip-host-to-update"
#When making an update it is important that your http request include an HTTP User-Agent to help No-IP identify different clients that access the system. 
#Clients that do not supply a User-Agent risk being blocked from the system.
NOIPUSERAGENT="bash-curl-cron/1.0 [email protected]"

CURLCMD="curl --user-agent $NOIPUSERAGENT --silent https://$NOIPUSER:[email protected]/nic/update?hostname=$NOIPHOST&myip=$MYIP"
echo "Running $CURLCMD"
RESULT="$($CURLCMD)"
echo "$RESULT"