Another Linux user here who would love to use a command line Python tool to backup my data to Backblaze: with Python I can see how my stuff is encrypted. That's the only reason I'm not using Backblaze right now: closed source client.
My only interest in B2 is backing up for a lower cost than the ridiculousness of S3: at $0.022/GB, I might as well buy a 3TB hard drive myself, put it at a friend's and push my data there. Every month. At the end of the year, I'd have 36TB in hard drive capacity if I bought drives instead of paying for 3TB of S3 storage.
(All numbers are estimates and "roughly"s. Also I don't have external backups now because I'm too lazy to write the software myself, so there is something to say for paying instead of not having it.)
