User-agent: *
Disallow: /cgi-bin/

User-agent: MJ12bot
Disallow: /

# Deny all robots that 

we do not specifically 

want to allow
User-agent: *
Disallow: /

# Allow these robots 

only
User-agent: slurp
Allow: / 

User-agent: bingbot
Allow: /

User-agent: googlebot
Allow: /