Among other external solutions, I store some data on Storage Boxes from Hetzner. The Storage Box allows you to have sub-accounts, so for every server and system storing data there, I use a separate account. For each sub-account, one can select a subdirectory where the data is stored, and the sub-account then can only see this data. The Admin account can see all data, and see all directories.
The usual way I access the Storage Box from other systems is by using sftp protocol from ssh (don't confuse this with the "other" sftp). That's all good, until I remove a sub-account and want to delete the subdirectory with the data. The server doesn't know "rm -r" for recursive deletion, which means I have to traverse into every directory, delete all files, then delete the empty directories. And the encrypted backup I'm using is creating plenty of subdirectories.
Or I find a better tool.
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