This script recursively collects GPS information from pictures in a certain directory. It uses exiftool for reading the EXIF tag.
Wopfi's GPS Extractor supports the following command line arguments:
-f file extension to search for
-o output file for the GPS coordinates
-a append to the text file instead of creating a new one
-d the root directory for the picture search
A typical command line looks like this:
./points_from_exif.py -f .cr2 -o gps_pictures.txt -d /myPictureFilePath/