I used monkey, it doesn't fully meet the requirements of my question because it requires use of a config file.

You might use it on port 2001, for the current directory like this in the console:

    sudo apt-get install monkey
    cp /etc/monkey/* .
    monkey -c monkey.conf


I have not tested it like this (what I actually did was, install it via Synaptic, copy its config files, and edit monkey.conf in Geany, my text editor of choice, before running it.)

Don't do it on your home directory, make a sub directory at least! :)