Wget is the command line, non interative , free utility in Unix like Operating systems not excluding Microsoft Windows, for downloading files from the internet. Most of the web browsers require user’s presence for the file download to be completed. But wget allows users to start the file retrieval and disconnect from the system. It will download the files in the background. The user’s presence can be a great hindrance when downloading large files.

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Power of Linux wget Command to Downloand Files from Internet (LinOxide)
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Wget. Resume, limit rate and run it in background (G. Garron)
Download an entire website with wget (ugly duck)