This little bash script checks if the files from one folder are also in another folder. This script works recursively through subfolders and does not require the same folder structure. This script was inspired by the discovery that I was missing vacation photos in my backups from my digital camera. Unsure which photos were missing, I wanted all missing photos. However, tools such as diff and rsync assume the same folder structure, and I had restructured my photo backups in separate years and occasions. This script allowed me to check what photos were on my camera but not in my backup and put them all in a folder for me to sort out where I wanted them in my backup.