Quote:
Originally Posted by Matsendrasana
Maybe I have not made clear what I try to accomplish: I do not want to add another format, and did not asked for detailed command-lines. I just want to replace a present book in the same format because its source (LibreOffice, Asciidoc etc.) has changed.
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As far as I can tell you really do want to replace the format, not add a book. The add_format command does that. Why do you want add a new book if the source file has changed instead of replacing the file in the existing book?
As for the ID, I assume that the book has some known attribute that you can use to match the book. If that attribute is title, then the following command provides trivially parsable output
Code:
calibredb list -f uuid -s "title:\"=the first lensman\""