Using Readline Functions in Bash
Tutorial – Readline
Readline provides you with a rich set of tools for working with text and moving around quickly and efficiently on the command line.
Try this: Open a terminal window and type the following at the prompt:
ls non-existent_dir
Then move your cursor back to the space between ls and non-existent_dir and press Ctrl+K. Next hit Ctrl+Y and see what happens.
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