Script asks to input data

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http://www.unix.com – Hi, I have three different files about a warehouse's stock status. Each file shows storage locations, stored product names, quantity of the part and at last column, its price. When there is a change in price, I open those files one by one, search related product name at each row and change the price manually. What I would like to have is a a script to make the task easier: It will ask me to enter which product name I am looking for. When I enter the product name in terminal panel, it will ask me the second question, the new price. When I enter new price in same format, it will repla (HowTos)