Write a script called fact. sh that is located in your workspace directory to calculate the factorial of a number n; where n is a non-negative integer between 1 and 20 that is passed as a parameter from the command line (e. g. ./fact. sh 5). The result should be echoed to the screen as a single integer (e. g. 120). NOTE: Do not include any other output, just output the single integer result.
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