I am a long term Calibre user on a Mac. I am trying to install it on a Raspberry 4B with aarch64 (64 bit) operating system. When I run the command as indicated by the Calibre install page for Linux systems:
sudo -v && wget -nv -O-
https://download.calibre-ebook.com/linux-installer.sh | sudo sh /dev/stdin
it reports that the system is 32 bit and the calibre installer will only run of 64 bit systems.
Definitely not true. It is a 64 bit system. Don't know where to go from here