#!/bin/sh

[ -f index.html ] &&  rm index.html

wget 'ftp://ftp.thp.uni-duisburg.de/pub/source/' -O index.html >/dev/null 2>/dev/null

if [ $? = 0 ]; then
	[ -f unfetchable ] && rm unfetchable
	grep -o '>untex-.*<' < index.html | md5sum > new-sum
	touch sum
	if [ "$(cat sum)" = "$(cat new-sum)" ]; then
		rm new-sum
	else
		mv new-sum sum
		echo 'untex'
	fi
elif [ ! -f unfetchable ]; then
	touch unfetchable
	echo 'untex (unfetchable)'
fi