robots.txt allow root only, disallow everything else?

Question

I can\'t seem to get this to work but it seems really basic.

I want the domain root to be crawled

http://www.example.com

But nothing el

Answer 1

When you look at the google robots.txt specifications, you can see that:

Google, Bing, Yahoo, and Ask support a limited form of "wildcards" for path values. These are:

1. * designates 0 or more instances of any valid character
2. $ designates the end of the URL

see https://developers.google.com/webmasters/control-crawl-index/docs/robots_txt?hl=en#example-path-matches

Then as eywu said, the solution is

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