download html ebooks from Safari Books Online

get_safari_books.sh

#!/bin/bash

wget --mirror \
       --recursive \
       --convert-links \
       --no-parent \
       --domains  learning.oreilly.com \
       --random-wait \
       --adjust-extension \
       --header='cookie: cd_user_id=...; BrowserCookie=...; timezoneoffset=21600; csrfsafari=...; sign-on-email="..."; sessionid=...; logged_in=y;' \
       "${book_url}"