There is a powerful open source tool for managing object storage called s3cmd. It is available from http://s3tools.org/s3cmd and was originally written for managing object storage data in Amazon S3. It is also compatible with Catalyst Cloud object storage using the OpenStack S3 API.
While it is compatible, you will need to ensure that you specify the appropriate authentication details by customising the s3cmd configuration file.
The following changes need to be specified in the .s3cfg file.
host_base = object-storage.nz-por-1.catalystcloud.io:443 host_bucket = object-storage.nz-por-1.catalystcloud.io:443 signature_v2 = True use_https = True