robots.txt to disallow all pages except one? Do they override and cascade?

Question

I want one page of my site to be crawled and no others.

Also, if it\'s any different than the answer above, I would also like to know the syntax for disallowing ever

Answer 1

If you log into Google Webmaster Tools, from the left panel go to crawling, then go to Fetch as Google. Here you can test how Google will crawl each page.

In the case of blocking everything but the homepage:

User-agent: *
Allow: /$
Disallow: /

will work.