epub-meta(1) on Linux
The text bdbddb4c8257, as Debian 7 (Wheezy) shipped it.
read and write metadata from an EPUB ebook file
Flags it lists
-
--authors -
--comment -
--get-cover -
--help -
--language -
--series -
--series-index -
--tags -
--title -
--version -
-a -
-h -
-t