ebook-convert

TLDR

Convert an e-book into another format

$ ebook-convert [path/to/input_file] [output_file]

Convert Markdown or HTML to e-book with TOC, title and author

$ ebook-convert [path/to/input_file] [output_file] --level1-toc="//h:h1" --level2-toc="//h:h2" --level3-toc="//h:h3" --title=[title] --authors=[author]