Actually you can mount an bucket/container and access the objects or subfolders (and their objects) from Linux. For example, I have s3fs installed on Ubuntu that I have setup a mount point to one of my S3 buckets and able to do regular cp, ls and other functions just as though it were another filesystem. The key is getting the software tool of which there are plenty that allows you to map a bucket/container and present it as mount point. There are also software tools that allow you to access S3 and other buckets/containers via iSCSI in addition to as NAS.
