to access digitalocean's spaces from the command line, use s3cmd.

setup access token:
https://www.digitalocean.com/community/tutorials/how-to-create-a-digitalocean-space-and-api-key

configure s3cmd:
https://www.digitalocean.com/community/tutorials/how-to-configure-s3cmd-2-x-to-manage-digitalocean-spaces