Question: Write a command menu as follows:$ ex 7 Command Menua. Enter a welcome message and write this message to a file msg . b .

Write a command menu as follows:$ ex7Command Menua. Enter a welcome message and write this message to a file msg.b. Send the contents of the file msg to all users who are logged in.Enter a, b :The function for each selection is as indicated in the menu. Bash programming

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