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Find duplicate words using sed

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# 1  
Old 03-07-2014
Find duplicate words using sed
I have following statement and I want to find duplicate word using sed command. How is it possible?

"detect string and remove the duplicate string"

There could be many statements in a file and each line may have duplicate word.

Thanks!
# 2  
Old 03-07-2014
Sometimes a good google is all you need...Here is a sample where
someone uses awk.

Code:
http://www.folkstalk.com/2012/09/remove-duplicate-strings-words-from.html

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