Directory for FileAppender

What is the preferred way of setting the directory in which logfiles are
stored? I'd like to have in my configuration file only the basename of
the logfile, the directory should be determined by the application,
depending on the user context (e.g. $HOME/logs on Unixen or
%USERPROFILE%\somewhere).

Is there another way than dynamically changing the working directory
of my application? What if I'd like to spread several logfiles to
different directories?

Regards, Peter
-- 
    _   _        Peter Steiner <peter.steiner@xxxxxxxx>
  / /_/ /        Hug-Witschi AG <http://www.hugwi.ch/>
 /  _  /         Electronic Engineering
/_/ /_/  _   _   Auriedstrasse 10
   / / / / / /   CH-3178 Boesingen
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