Displaying information in a file

There are two main commands for displaying information in a text file, cat and less. The first, cat, is short for ``concatenate.'' Its primary function is for combining multiple files together, but when only one file is specified it writes the entire contents of the file to the screen. By contrast, less writes the file to the screen one page at a time interactively. When in less, press h to get help with its commands. Press q to quit out of less.