Scripting Unix

Create a menu that will allow you 5 selections for items and one to exit.  Inside the menu you need to read user input to decide which of the 5 selections - After a menu item is executed, the screen should be repainted with the menu until the user specifies that they want to finish. - You need to somehow handle incorrect user input, but only exit if they choose your exit option  For this part, you only need to print a message for each of the 5 selections. Sample Menu Menu 1. Selection 1 2. Selection 2 3. Selection 3 4. Selection 4 5. Selection 5 Enter Your Selection ( x to Exit) ==> Menu Item Functionality - You need to bring the system down for maintenance and call the users to let them know. This selection finds out who is logged in, pulls the first name and the telephone number out of the addressfile and displays it to the standard output. - The user stu23 has gone home for the day and left his processes running. You want to find those processes and stop them. You want to use this option in the future so it will prompt for the user name, find and stop all processes started by that user (include an “are you sure” message). - It is discovered that two users have the same user id in the address file. This option checks the addressfile for that situation and, if it exists, prompts you for a new userid which it will fix in the file with. - Your Boss has asked for a list of all users, but does not care about the userid. This option will pull out all users and sort them by last name but the output should be : Firstname Lastname Address Town Telephone number  The users are storing way too many files in their home directory and you would like to notify the top 5 offenders. You might want to run this script again for more or less users so this selection will prompt for the number of users to identify, check how many files they have in their home directory and send a list of those users to the standard output.