Allow crawling of only the home page of a sub-directory using robots.txt

Question

I have

• www.example.com with WordPress

and

• www.example.com/sitetwo with another WordPress

I would allow crawling for the entire example.com and only the home page of example.com/sitetwo. What I have to write in my robots.txt?

Answer 1

Allow: /sitetwo/$
Disallow: /sitetwo/

$ means "exact match" in this context.