How can I know my IP address geted by the website?

To: or-talk@xxxxxxxx
Subject: How can I know my IP address geted by the website?
From: LinDu <baidufantuan@xxxxxxxxx>
Date: Tue, 11 Sep 2007 01:27:21 +0800
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I want to know my IP as it is shown on www.showmyip.com when I am using Tor and visit the website.Is there any control commands can help me know it?

Who can kindly give me the answer?

Regards to all

Follow-Ups:
- Re: How can I know my IP address geted by the website?
  - From: coderman