what type of query i use in robots.txt file in this situation?

what type of query i use in robots.txt file in this situation?

example
two url

1. http://forums.digitalpoint.com/showthread.php?t=1111474&some-dummy-text-here-in-url

2. http://forums.digitalpoint.com/showthread.php?t=1111474


both url result are same. mens this are duplicate content.

now i want to stop all url like url 1.
or you can say google index 2000 url like url 1 and url2 now i need some query to stop indexing url 1

is it possible to write this type of query?

 

I don't think this is possible for Googlebot.

 

Just add this to your robots.txt :

User-agent: *
Disallow: /showthread.php?*&

Code (markup):

 

r u 100% sure is it ok?

 

This will surely work..

 

That is for sure how you do it. If you want to see what google has to say about follow this link
http://www.google.com/support/webmasters/bin/answer.py?answer=40360&hl=en

I have used this method to get rid of over 700 pages of so called duplicate content. Check out the link it explains it pretty good.

 

Google doesn't provide more information about regular expressions in robots.txt..