This program fetches a random XKCD comic and puts it on your Remarkable's suspend screen.
env GOOS=linux GOARCH=arm GOARM=7 go build -o cover.arm
scp cover.arm root@remarkable-local:/home/root/
scp cover.service root@remarkable-local:/etc/systemd/system/
ssh root@remarkable-local "systemctl daemon-reload; systemctl enable cover; systemctl restart cover;"