robots.txt uses code example
Example: robots txt
# Group 1
User-agent: Googlebot
Disallow: /nogooglebot/
# Group 2
User-agent: *
Allow: /
Sitemap: http://www.example.com/sitemap.xml
# Group 1
User-agent: Googlebot
Disallow: /nogooglebot/
# Group 2
User-agent: *
Allow: /
Sitemap: http://www.example.com/sitemap.xml