md5 just a test ... echo


echo md5('just a test');

yields the following string:

<!--c6db3524fe71d6c576098805a07e79e4-->

Therefore, if you have an HTML page, and would like to provide an interesting response to queries that are attempting to execute the echo md5 just a test command - you can hard-code the string, as above, in comments.

Any page can deliver the string.

:)