The program downloads every single image part of the entire book.
You also need "imagemagick" and "jpeg2pdf" to transform images into a single pdf.
Let's get started!
1) install "getxbook" using your distro's repository or download & compile the package
how to compile:
download the package here: http://njw.me.uk/getxbook/
unzip
open a shell
cd /path_to_unzip_dir
make
sudo make install
done!
2)choose a book in google book, and copy the book's ID (look at adress bar: ID it's after id= and it ends before &)
3)open a shell:
getxbookgui
paste book's ID
when software is ready , it says "done"
you should find the directory with all images ripped from google books in your home ; its name will be the book's ID
4) open images directory
There will be some files in .jpg and other files in .png ; you have to erase all .png files
4a)erase png files:
open a shell
cd /home/yourusername/ID
mogrify -format jpg *.png
rm *.png
[optional: if jpgs are too heavy -> mogrify -quality 50 *.jpg ]
5) make a pdf
jpeg2pdf /home/yourusername/ID book.pdf
Done! your pdf is in the pictures directory (or at your home)
getxbookgui can be used with amazon and barnes & noble websites too.
IMPORTANT:you are supposed to use this post for legal downloads for example old books (now copyleft) or -when allowed- just a very small part of a book.