Chapter 39: SSH in Shell Scripts for Automation
In this chapter, you'll learn how to use SSH in shell scripts, handle non-interactive sessions, capture remote output, avoid password prompts, and write robust SSH automation.
In the previous chapter, you learned how to run commands on remote systems without opening an interactive SSH session, send local scripts directly to remote servers, use X11 forwarding to run graphical applications remotely, and recover from frozen SSH sessions using escape sequences. With that, you completed Module 10.
Now it's time to begin Module 11.
So far, most of what you've learned about SSH has focused on interactive use, where you're sitting at the keyboard and running commands yourself. In this module, you'll take the next step by learning how to use SSH in scripts and automation.
In this chapter, you'll learn how to write SSH scripts that work reliably, handle errors properly, and continue running even when no one is there to respond to prompts or deal with unexpected output.
These are the techniques you'll use to automate real-world system administration tasks with confidence.