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Splitting/Joining URLs
File.dirname "http://foo.com/bar/stuff.html"
#=> "http://foo.com/bar"
File.basename "http://foo.com/bar/stuff.html"
#=> "stuff.html"
File.split "http://foo.com/bar/stuff.html"
#=> ["http://foo.com/bar", "stuff.html"]
File.join( File.dirname("http://foo.com/bar/doc.html"), "relative_link.html" )
# => "http://foo.com/bar/relative_link.html"(Originally by Ilmari Heikkinen on the ruby-talk mailing list.)
