QuickDrop
This is a simple CLI for quickly sharing a file or folder via Dropbox that's already located in a Dropbox folder.
It's as simple as
$ export DROPBOX_ACCESS_TOKEN=yourdropboxaccesstoken
$ export DROPBOX_ROOT_PATH=yourdropboxrootpath
$ pip install quickdrop
Collecting quickdrop
...
Successfully installed quickdrop-x.y.z
$ url <filepath.whatever>
Okay, <filepath.whatever> is now shared, accessible via
https://www.dropbox.com/sh/bunchofrandomchars/morerandomcharsnstuff?dl=0.