This shortcut allows you to recall and reuse the last argument from the previous command without having to retype it. Especially when dealing with lengthy file paths or complex commands, !$ can save time and reduce the chance of errors. In this guide, we’ll explore how it works, look at examples, and compare it with related tools like $_ and the Alt + . keyboard shortcut.
If you’re just starting to explore shell scripting, it might be useful to first read this beginner-friendly guide to echo in shell scripting.