AWS : Userdata after every restart

aws.amazon.com/premiumsupport/knowledge-center/execute-user-data-ec2/

https://serverfault.com/questions/797482/how-to-make-ec2-user-data-script-run-again-on-startup

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#cloud-config

cloud_final_modules:

- [scripts-user, always]

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#!/bin/bash

/bin/echo "Hello World" >> /tmp/testfile.txt

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