Bulk Convert XLS To CSV

There are many offers. The interesting one is

$ sudo easy_install xls2csv

Sadly, my Ubuntu 13.04 said
error: could not find suitable distribution for Requirement.parse('xls2csv')

But this one Excel – Batch Convert XLS To CSV makes me jump!

The older version has a standard naming which is fine. The new one runs in html which I don't try.

Thank you  Chris West!