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In the world of Linux and automation, using SSH (Secure Shell) to manage servers and execute commands remotely is a daily routine. However, handling SSH authentication in automated scripts can often be cumbersome due to the security measures involved in logging into a remote system. Here, we will discuss several techniques for seamless SSH authentication that can streamline this process in your scripts, and ensure that they run smoothly without manual intervention. The most basic and secure method to automate SSH login is through SSH key-based authentication. This involves generating a pair of cryptographic keys: a private key that resides on the client and a public key that you place on the server.