disallow URL with parameters

/?id=asdf vs /

[Ratbert]

Would the following robots.txt block access to /?id=asdf but would still allow / to be indexed?

User-agent: *
Disallow: /?id=

[ThomasB]

Ratbert, it's unlikely to work.

I'd suggest creating a dedicated filename and exclude it specifically.

[alexo]

Hello

pls, correct me, if this is wrong.

i guess, it's that , what u need

User-Agent: *
Disallow: /*?

[spiral]

This is what Google claims, at least for G. bot - see [google.com...]

[Receptional Andy]

You could add a robots meta tag to the pages you want excluded instead - this would probably be simpler than messing with non-standard robots.txt contents.

If you are only concerned about Google, and want non-standard code, I believe the following might work:

User-agent: Googlebot
Disallow: /*id=