You could also copy to a different name on the same disk, and when the copying has been finished just 'move' (mv) the file to the filename the other application expects. E.g. QMail works this way, writing incoming mails in folders.
Met vriendelijke groet, Wilbert Berendsen -- http://www.wilbertberendsen.nl/ "You must be the change you wish to see in the world." -- Mahatma Gandhi -- http://mail.python.org/mailman/listinfo/python-list
