Downloading in background
While downloading a large file, to save your time, you can download the file in the background and meanwhile work on the terminal using option b.
wget -b https://www.google.com/doodles/australia-day-2015
Look at the above snapshot, we got our terminal back while downloading is still in process.
To check the downloading status, use following command.
Look at the above snapshot, it shows the downloading status which says our file is 100% downloaded.