Redirecting categories

hi, i want to know how i can make my category url’s to redirect to the original post url.
Like – www.example.com/category/xyz.html – to – www.example.com/xyz.html
as google is indexing both pages and its creating a lot of problem.

• This topic was modified 3 years, 4 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not a Requests and Feedback topic