hello and welcome to the forum,
to create a remote for dropbox, need to use a machine with a web browser.
there are two ways as documented at
https://rclone.org/remote_setup/
a third option is to start a ssh session like so
ssh -L localhost:50000:localhost:53682 user@remote
- on the ubuntu server, via ssh, run
rclone config
- when you get to the section
NOTICE: If your browser doesn't open automatically go to the following link: http://127.0.0.1:53682/auth?state=9S1zAQXEZOHL98lz5TL0bA
now, on your host machine, with a web browser, change the port to50000
and open the weblink.
note: your weblink might not exactly match this example
http://127.0.0.1:50000/auth?state=9S1zAQXEZOHL98lz5TL0bA - on the host machine, you should be taken to dropbox website, to login
- after that, in the web browser, should display a new URL.
note: your weblink might not exactly match this example
http://localhost:53682/?code=jVVmrSGCqVAAAAAAAAAAK8lTfl9Fhcbo9iFjFVvFdYg&state=9S1zAQXEZOHL98lz5TL0bA
just change53682
to50000
and press enter. - switch back to the ubuntu server, and rclone should tell
NOTICE: Got code
Configuration complete.