wget
wget [option]... [URL]...
wget is a utility for non-interactive download of files from the web.
A really handy utility for grabbing stuff from the Web. It works with everything from single files to entire websites.
Examples
Download a file from a given URL
wget http://shellspells.org/theme/images/shellspells_splash.jpg
Download an entire website. -r means recursive and -l specifies the maximum depth, with 0 meaning unlimited.
wget -r -l 0 http://www.example.com/
