Most files can be printed by opening the file then printing it from the application by selecting Print from the File menu and selecting the oneup or twoup printer as appropriate. Text files can also be printed from the command line using lpr. In a terminal window, type lpr <path_to_file> where <path_to_file> is the path to the file you want to print. lpr prints twoup by default. Use the command lpr -Poneup <path_to_file> to print oneup.