#!/bin/sh

if [ $# -lt 1 -o "$1" = "-h" -o "$1" = "--help" ] ; then
	echo "Usage: $0 ipfile [prefix]"
	exit 2;
fi;

for x in `cut -f 2 "$1" | sort | uniq` ; do
	cut -f 2- "$1" | grep "$x" | cut -f 2- > "$2$x.txt"
done
