How can I convert a collection of asciidoc files into a unified html file?

[davideuler]

First generate the file list of the book:

find . -name '*.asciidoc' | sort > all_in_one.asciidoc

Then append "include" instruction and levelofoffset in the merged asciidoc:
awk '{print "include::"$1"[leveloffset=1]"}' all_in_one.asciidoc > all_in_one_book.asciidoc

And you may append the toc in the book:
= Ethereum development book
:sectnums:
:toc:
:toclevels: 2
:doctype: book

:leveloffset: 1

include::./前言.asciidoc[leveloffset=1]
include::./术语.asciidoc[leveloffset=1]
include::./第一章.asciidoc[leveloffset=1]
include::./第二章.asciidoc[leveloffset=1]
include::./第三章.asciidoc[leveloffset=1]

:leveloffset: 0

[Index]
= Index

Finally generate the book as:
/Applications/asciidoctor-web-pdf-mac-v1.0.0-alpha.14/asciidoctor-web-pdf -D ~/Downloads/ethereum_book/ -B ~/workspace/ethereum_book/ all_in_one_book.asciidoc