Block file from accessing using .htaccess for a subdomain

I have a website for e.g.

www.domain.com
开发者_开发问答

And I have another subdomain for e.g.

test.domain.com

Both my main and subdomain point to same directory which is public_html.

I want to block access to

test.domain.com/test.jpg 

but not

domain.com/test.jpg

Please note that this test.jpg is same file for both main and subdomain as they both point to same directory. So how do I block it for subdomain but not for main domain using .htaccess? Or is there any other way of doing that?

Thanks

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An .htaccess file will be used regardless of the virtual host (unless explicitly deactivated using AllowOverride None), therefore you'll have to put:

<Files /full/path/to/test.jpg>
  Deny From All
</Files>

in the apache configuration file inside the test.domain.com virtual host configuration.