I have url
http://www.website.com/shopping/books/?b=9
I have disallow /?b=9 from robots.txt
as
User-agent: * Disallow: /?b=9
But when i test this from Google Webmaster Robots.txt Test Tools.
Showing allowed while it should be display disallowed...
Please tell any wrong with my robots.txt
URL - http://www.website.com/shopping/books/?b=9
User-agent: * Disallow: /?b=9
Also
there /?b=9 this will be same in all cases and /shopping/books/ will be change with different category.
How to Block this types of string ?
Disallow: /?b=9
Is it correct ?