User-agent: *
Disallow: 

User-agent: Mediapartners-Google*
Disallow:


#To exclude all robots from the entire server
#User-agent: *
#Disallow: /

#To allow all robots complete access
#User-agent: *
#Disallow:

#Or create an empty "/robots.txt" file. 

#To exclude all robots from part of the server
#User-agent: *
#Disallow: /cgi-bin/
#Disallow: /tmp/
#Disallow: /private/

#To exclude a single robot
#User-agent: BadBot
#Disallow: /

#To allow a single robot
#User-agent: WebCrawler
#Disallow:

#User-agent: *
#Disallow: /

#To exclude all files except one
#This is currently a bit awkward, as there is no "Allow" field. The easy way is to put all files to be disallowed into a separate directory, say "docs", and leave the one file in the level above this directory: 
#User-agent: *
#Disallow: /~joe/docs/

#Alternatively you can explicitly disallow all disallowed pages: 
#User-agent: *
#Disallow: /~joe/private.html
#Disallow: /~joe/foo.html
#Disallow: /~joe/bar.html