General workflow:
stored picture on external hard drive, organized by year, and others
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for fp in JPG/*/* ; do mkdir -p "sized/$fp"; done
for fp in JPG/*/*/* ;do echo $fp; convert "$fp" -resize 2048x1536 "sized/$fp" ; done
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small images in sized folder
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transfer to Kindle
need to disable display sleep under Display&Sounds-Properties on Kindle device
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ADD ANNOTIONS (keywords)
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transfer to PC
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copy EXIF (To copy or move metadata, the -tagsFromFile feature is used. By default the original files are preserved with_original appended to their names -- be sure to verify that the new files are OK before erasing the originals. )
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check files
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restore modification time on images
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remove original
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remove sized images
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remove Kindle images
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mv image with delete keyword to trash
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rotate images with rotate keyword (and remove keyword)
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crop images with crop keyword (and remove keyword)
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enhance images with enhance keyword (and remove keyword)
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copy images to book-mat, book-yo, book-bernd, book-mami, book-oma, calendar, 


Need to sort images in book folders