Fetch the latest cartoon from ruthe.de and build an Atom-Feed. You can use this with newsreaders that accept commands as a feed source (e.g. newsbeuter)

ruthe2atom.sh

#!/bin/sh

# Released under the WTFPL (wtfpl.org).

URL="http://www.ruthe.de"
toonid=`curl -s $URL | sed -n 's/^.*archiv\.php\?.*id=\([0-9]*\).*/\1/p' | sed 1q`
now=`date +%Y-%m-%dT%H:%M:%SZ`

echo -n "<?xml version=\"1.0\" encoding=\"utf-8\"?>
<feed xmlns=\"http://www.w3.org/2005/Atom\">
	<title>Ruthe.de</title>
	<link href=\"$URL\" />
	<id>$URL/</id>
	<author>
		<name>Ralph Ruthe</name>
		<uri>$URL/</uri>
	</author>
	<updated>$now</updated>
<entry>
<title>Neuer Cartoon ($toonid)</title>
<id>$URL/index.php?pic=$toonid</id>
<updated>$now</updated>
<summary>Neuer Cartoon!</summary>
<link rel=\"alternate\" href=\"$URL/index.php?pic=$toonid\" />
</entry>
</feed>"