How to check site indexed in Yahoo, Bing and Google ?

How to check site indexed in Yahoo?

Search Meta Words for Yahoo:

You can enter these Meta words directly into the Yahoo! Search box (http://siteexplorer.search.yahoo.com/).

* site: Use to find all documents within a particular domain and all its subdomains.
Example: site:yahoo.com
* hostname: Use to find all documents from a particular host only.
Example: hostname:autos.yahoo.co
* link: Use to find documents that link to a particular URL.
Example: link:http://autos.yahoo.com/
* url: Use to find a specific document in our index.
Example: url:http://edit.autos.yahoo.com/repair/tree/0.html
* inurl: Use to find a specific keyword as part of indexed URLs.
Example: inurl:bulgarian
* intitle: Use to find a specific keyword as part of the indexed titles.
Example: intitle:Bulgarian

To more visit:
http://help.yahoo.com/l/us/yahoo/search/basics/basics-04.html

How to check site indexed in Bing?
(site:http://yourdomain.com/)

How to check site indexed in Google?
info:http://yourdomain.com/