i have tried several tutorials for connecting delta copy via ssh to a linux file server , even the one recommended by delta copy itself but it didn,t worked out .. is there any complete tutorial ...

Secure Copy is a UNIX standard used to transfer files from one computer to another. He's how to use the function in macOS, all via the Terminal window.

SSH keys provide a secure and convenient way to authenticate remote servers. In this step-by-step tutorial, Jack Wallen explains how to easily create and copy SSH keys.

SSH known hosts store server fingerprints to prevent security risks. Learn how to use SSH known host commands to manage entries on Linux systems.