I am new to this. I have a blog site. I am wondering how to determine if google or yahoo crawling just index page or whole site. Can you check this in server logs?
Yes, you can check in your server logs finding 'Googlebot' for Google, 'MSNBot' for MSN, or 'Slurp' for Yahoo.
To tell if Google has indexed your entire site type this search in Google: site:http://www.yoursite.com/ (replace http://www.yoursite.com/ with the address of your site)