I was searching for how best to upload very large files (particularly without having to store them on the Dropbox main folder). I found this answer, which indicates that there's no way to do it without storing in the Dropbox folder.
However, I also subsequently found that was incorrect. It appears to be possible to use the command-line client. I would have replied to the other thread, but it appears to be locked, so I'm opening this thread to share the information.
After installing the client, I ran a command and it appears to be working:
```
dbxcli put /tmp/large-file
```