Am I Online?

#!/bin/bash

# simple wrapper to test and see if you're online so your scripts don't waste your time (or clog your log).
# I test this way because of hotspots that let you *connect* - but you aren't online.

cmd="$@"

ext_ip=$(/usr/bin/wget -q -O - checkip.dyndns.org | /bin/sed -e 's/[^[:digit:]|.]//g')
len_ext_ip=${#ext_ip}
if [ $len_ext_ip -lt 16 ]; then
    if [ $len_ext_ip -gt 7 ]; then
    exec $cmd
    fi
fi
#echo "$cmd"
#echo "$ext_ip"