sed – stream editor for filtering and transforming text

commandline session $ 4.2.20 36 535—> cat tiles.txt 1. width 2 meters and 15 centimeters height 1 meters and 50 centimeters area = 2.15 * 1.50 = 3.225 square meter 2. width 2 meters and 15 centimeters height 43 centimeters area = .9245 square meter Sum = 4.1495 square meter. 1 tile = .1350 square …