Check for IP address at hotspot

#!/bin/bash

#Sometimes when I've hooked up to a hotspot, before the "login" I'll get a bunch of crap
#instead of an actual IP address in my conky config.  This fixes that.

#check for ip address
ext_ip=$(wget -q -O - checkip.dyndns.org | sed -e 's/[^[:digit:]|.]//g')
#check the length of the returned string.
len_ext_ip=${#ext_ip}

if [ $len_ext_ip -gt 16 ]; then
    # more than 16 digits, it's garbage; we're not connected.
    echo "0.0.0.0"
else
    # return the actual ip address.
    echo "$ext_ip"
fi