Is there a way to find out which EPUBs have content.opf that is out of date (or different) from what is stored in the Calibre database? I'd like to have all my EPUBs with matching metadata compared to calibre, because I use other programs to serve OPDS feeds and sometimes just email someone a EPUB that I have.
Going forward what is the easiest way to keep content.opf updated when I update calibre metadata?
Thanks.
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