The OpenStack tool primarily used for managing Cloud Files is written in Python and called swift. It is also known as python-swiftclient.
The following OpenStack documents can help you install swiftclient and learn to use it:
You can use OpenStack documentation to help you learn to use OpenStack CLIs in the Rackspace Cloud. OpenStack documents describe general practice; you should expect to supply some Rackspace-specific details. Use your Rackspace credentials where the OpenStack examples ask for OpenStack credentials.
where you are asked for
supply your Rackspace username.