You could use and ODBC-ODBC bridge or proxy from the Linux box to a Windows box running the VFP ODBC Driver (http://www.openlinksw.com/ is an example.) Or use a Linux library that can directly access VFP dbfs (cons: haven't seen one that supports post VFP 2.6 files, no SQL.) If using Perl DBI, http://www.geocrawler.com/archives/3/183/1999/10/0/2806200/)

You could also import the VFP data to mySQL or PostgreSQL and even convert the VFP apps to use the database server as their backend.