Determine Country Code for a List of IP Addresses

ipinfo.sh

#!/bin/bash

#  Usage: ./ipinfo.sh file_containing_one_ip_per_line

filename=$1
ipAddresses=`cat $filename`
`echo "" > out.txt` #To empty the file

readonly ourPath="$(dirname $0)"

# Check if geoiplookup Exists
if [ ! -x "$(which geoiplookup)" ]; then
        echo "geoiplookup does not exist, exiting..."
        exit 1
fi

# Download Country DB if it does not exist
readonly geoIPDB="$ourPath/GeoIP.dat"
if [ ! -e "$geoIPDB" ]; then
        echo "GeoIP DB not found... downloading"
        cd $ourPath
        curl -s -O "http://geolite.maxmind.com/download/geoip/database/GeoLiteCountry/GeoIP.dat.gz"
        gunzip GeoIP.dat.gz
fi


for ip in $ipAddresses
do
    cmd="$(geoiplookup -f GeoIP.dat ${ip} | awk '{ print $4 }' | sed 's/.$//')"
    echo "${ip} ${cmd}" >> out.txt
done

echo "country codes appended to ip addresses.  File can be found at out.txt"