ebook-edit(1) on Linux
The text 80454b478c89, as Debian 11 (Bullseye) shipped it.
ebook-edit Launch the calibre Edit book tool. You can optionally also specify the names of files inside the book which will be opened for editing automatically. Whenever you pass arguments to ebook-edit that have spaces in them, enclose the arguments in quotation marks. For example: "/some path/with spaces"