Not quite darnoth.

USE AT YOUR OWN RISK
First, make a backup of that directory. Then edit the obviously phony (capitalized) variables in this command to your liking:
Code:
find /PATH/TO/DIRECTORY/GOES/HERE/ -type f -name "*.html" | while read f; do perl -pe 's,\</html\>,<a href="LINKGOESHERE">HYPERTEXT</a></html>,' "$f" > "$f".new; mv "$f".new "$f"; done
...will recursively scan through /www/directory/goes/here and replace </html> with <a href="LINKGOESHERE">HYPERTEXT</A> in every single HTML file in that directory. Don't run this more than once.
