`epubinfo` command-line tool

epubinfo command-line tool shows metadata of specified epub file.

Usage

epubinfo path/to/book.epub

Example:

$ epubinfo ~/Documebts/Books/build_awesome_command_line_applications_in_ruby_fo.epub
Title:              Build Awesome Command-Line Applications in Ruby (for KITAITI MAKOTO)
Identifiers:        978-1-934356-91-3
Titles:             Build Awesome Command-Line Applications in Ruby (for KITAITI MAKOTO)
Languages:          en
Contributors:       
Coverages:          
Creators:           David Bryant Copeland
Dates:              
Descriptions:       
Formats:            
Publishers:         The Pragmatic Bookshelf, LLC (338304)
Relations:          
Rights:             Copyright © 2012 Pragmatic Programmers, LLC
Sources:            
Subjects:           Pragmatic Bookshelf
Types:              
Unique identifier:  978-1-934356-91-3
Epub version:       2.0

To see help:

$ epubinfo -h
Show metadata of an EPUB file

Usage: epubinfo [options] EPUBFILE

    -f, --format=FORMAT              format of output(line, json or yaml), defaults to line(for console)
        --words                      count words of content documents
        --chars                      count charactors of content documents

Output formats

epubinfo can output in three formats: line, JSON and YAML. You can specify format by --format(-f) command-line option

JSON

$ epubinfo --format=json ~/Documebts/Books/build_awesome_command_line_applications_in_ruby_fo.epub | jq .
{
  "title": "Build Awesome Command-Line Applications in Ruby (for KITAITI MAKOTO)",
  "identifiers": "978-1-934356-91-3",
  "titles": "Build Awesome Command-Line Applications in Ruby (for KITAITI MAKOTO)",
  "languages": "en",
  "contributors": "",
  "coverages": "",
  "creators": "David Bryant Copeland",
  "dates": "",
  "descriptions": "",
  "formats": "",
  "publishers": "The Pragmatic Bookshelf, LLC (338304)",
  "relations": "",
  "rights": "Copyright © 2012 Pragmatic Programmers, LLC",
  "sources": "",
  "subjects": "Pragmatic Bookshelf",
  "types": "",
  "modified": "",
  "unique identifier": "978-1-934356-91-3",
  "epub version": "2.0"
}

YAML

$ epubinfo --format=yaml ~/Documebts/Books/build_awesome_command_line_applications_in_ruby_fo.epub
---
title: Build Awesome Command-Line Applications in Ruby (for KITAITI MAKOTO)
:identifiers: 978-1-934356-91-3
:titles: Build Awesome Command-Line Applications in Ruby (for KITAITI MAKOTO)
:languages: en
:contributors: ''
:coverages: ''
:creators: David Bryant Copeland
:dates: ''
:descriptions: ''
:formats: ''
:publishers: The Pragmatic Bookshelf, LLC (338304)
:relations: ''
:rights: Copyright © 2012 Pragmatic Programmers, LLC
:sources: ''
:subjects: Pragmatic Bookshelf
:types: ''
modified: ''
unique identifier: 978-1-934356-91-3
epub Version: '2.0'

Character and word count

epubinfo can count characters and words(space perarated) in EPUB document. Pass --chars and --words options to the command.

Note that this makes process slower because it will read all the document.