This is a true synchronisation tool, that copies newer files both directions to build two identical copies of the same filesystem. It creates a new problem, which is the case when a file has been modified on both sides a different way. The solution found is that a self-made script is called with parameters giving the name of the files to synchronise, giving the user of the unison tool freedom to implement its own way to solve the issue. Very valuable tool, that I used on VPN on Internet internationaly. A single problem: if the synchronisation process gets broken (the VPN stops, the DSL IP address changes, ...), the entire file on its way to be copied must be re-copied. This is a problem especially when synchronising DVD iso images. Patrick Useldinger wrote: -- Brent Frère Private e-mail: Brent(a)BFrere.net Postal address: 5, rue de Mamer L-8280 Kehlen Grand-Duchy of Luxembourg European Union Mobile: +352-021/29.05.98 Fax: +352-26.30.05.96 Home: +352-307.341 URL: http://BFrere.net This e-mail signature can be checked if you have the CaCERT certificate installed. Check http://www.CaCERT.org for details.