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This lab is done in the Ubuntu OS

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This lab is done in the Ubuntu OS.

I don't need you to do the lab, I just need to know what commands I need to preform to satisfy the requirements of the lab.

Often one of the biggest challenges with a script is validating user input. Even simple things like ensuring that a valid integer is entered can result in a fair amount of code. For this scenario, make a program that validates user input so that only an integer (whole number), positive or negative, is allowed.