Since GOG Galaxy doesn't run under Linux, the cloud save feature doesn't work there. I play on a Linux box and a Windows one, and would love to play the same game on each. Just wondering if anyone had bodged together a command-line client to sync a Linux game with its cloud saves?

You can take a look at https://www.gamingonlinux.com/2021/01/simple-gog-client-for-linux-minigalaxy-has-a-small-update-out