The Calibre library server is a great way to store your eBooks. It allows you to: Share your books with others. Easily transfer your books between devices and access them from anywhere. Installation Install the Calibre package. You might also want rsync to upload books. apt install -y calibre rsync mkdir /opt/calibre Either upload your existing library using rsync. For example to /opt/calibre/. cd ~/Documents rsync -avuP your-library-dir root@example.