linux - How do I script a "yes" response for installing programs?

Question

I work with Amazon Linux instances and I have a couple scripts to populate data and install all the programs I work with, but a couple of the programs ask:

Do you want to continue [Y/n]?

and pause the install. I want to auto answer "Y" in all cases, I'm just now sure how to do it.

Answer 1

The 'yes' command will echo 'y' (or whatever you ask it to) indefinitely. Use it as:

yes | command-that-asks-for-input

or, if a capital 'Y' is required:

yes Y | command-that-asks-for-input

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If you want to pass 'N' you can still use yes:

yes N | command-that-asks-for-input