"The Linux operating system is loaded with files: configuration files, text files, documentation files, log files, user files, and the list goes on and on. Quite often, those files contain information you need to access in order to find important data. Although you can easily dump the contents of most files to the screen with standard utilities such as cat, more, and others, there are utilities better suited for filtering and parsing out only those values that are relevant to you.
"As you read this article, you can open your shell and try the examples of each utility..."
