photoprint --version (return code: 0)
photoprint 0.4.2-pre2
photoprint --help (return code: 0)
Usage: photoprint [options] image1 [image2] ...
-h --help display this message
-v --version display version
-p --preset read a specific preset file
-b --batch run without user interface
-d --debug set debugging level - 0 for silent, 4 for verbose