How to wget pages from a site as if you were logged in?

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http://askubuntu.com – Some parts of wikipedia appear differently when you're logged in. I would like to wget user pages so they would appear as if I was logged in. Is there a way I can wget user pages like this http://en.wikipedia.org/wiki/User:A this is the login page: http://en.wikipedia.org/w/index.php?title=Special:UserLogin&returnto=Log... (HowTos)