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It was written in C as a single threaded application. The rsync algorithm uses a type of delta encoding, and is used for minimizing network usage. Initial setup We're going to do this tutorial on a proxmox server with 2 LXC Containers on the same local network: We login via ssh in both of them: root@debian-nginx2:~# apt search rsync
rsync/stable,now 3.1.3-6 amd64 [installed,automatic]
fast, versatile, remote (and local)...