A series of tutorials that provide an introduction to the command line.

Users are guided through the process of automating the download of twenty PDF files from the Library of Congress webpage, and extracting LC Subject Heading information from each.

From the introduction...

...You need to know this. You really do. If you're a librarian, and you're working with lots of information -- and I mean, lots, like information overload lots -- you need to be equipped with a way to handle this information without resorting to mind-numbing data entry methods.