Question: Write a Bash shell script that prompts the user to enter an integer between 0 and 9 9 9 , inclusively. If the integer is

Write a Bash shell script that prompts the user to enter an integer between 0 and 999, inclusively. If the integer is valid then print the number along with the sum of the digits to the file lab2_task3.txt. If the number is invalid write Invalid to the file and end the program.

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