Apache redirect subdomain without changing the browser URL

[Ashish k <ka76115@xxxxxxxxx>]

Hi

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           I want to redirect http://subdomain.example.com to http://subdomain.example.com/subdomain (I donot want http://example.com/subdomain  ) using rewrite rules only. Tried all possible ways unsuccessfully. I got some points over this excellent arrticle http://forums.hostgator.com/rewrite-subdomains-point-sub-folders-t47619.html?s=12718aaafd8ea994669a2f8b3c69209f&amp; 

Now I am wondering, does apache really could not do it using mod_rewrite?

Any insights on this will be appreciated.

Thanks in advance

Ashish