Install asciidoctor by entering the following commands in the terminal:
sudo apt update sudo apt install asciidoctor
Description:
AsciiDoc to HTML rendering for Ruby
Asciidoctor is a pure Ruby processor for converting AsciiDoc source files and strings into HTML 5, DocBook 4.5, DocBook 5.0 and other formats.
Homepage: http://asciidoctor.org
Version: 1.5.5-1
Section: universe/ruby