The following Lisp program loads the lines of a file and checks the length to a specified number of characters. If the length of the line is smaller than the specified *max-string-length*, the line will be send to the standard output. Additionally, you can use shell tools to sort the output and delete entries that are not unique.

The program is as follows:

I found a really interesting approach that uses cgi and lisp to return a html request. The examples are from http://cybertiggyr.com/lisp-cgi/. The author presents many examples and the source code of his work.