Bash script to sort image files

• to help organize photo files
• creates & sorts image files into year & month subdirectories
• also creates day subdirectories, if answer at prompt is Y for Yes
• sorts by photo-taken date or if missing, modified date - since creation date is sometimes assigned file download date, which is incorrect

Name: sort_images.sh

Gives user prompts, e.g.,

• directory path: /Users/kimlew/Sites/bash_projects/bash-sort-images
• whether you want day subdirectory also: n

Or lets user enter 2 command-line arguments, e.g.,

./sort_images.sh '/Users/kimlew/Sites/bash_projects/bash-sort-images' 'Y'

Note: If ANY command-line arguments have spaces, you MUST put in single-quotes!