Description:

DigicaMerge is a commandline tool to merge directories of pictures taken
with digital cameras. If you've got a digital camera, your hard disk
probably contains many directories full of pictures all named with the
same names. This utility allows you to merge such directories' contents
into a new directory, and renames all the pictures on the fly, ensuring
no filename clash will occur. You can define your own naming scheme,
using either a set of predefined variables or any recognized Exif tag
which may be present in your pictures, and also specify a pattern to
select only certain files.