User-agent: *googlebot
User-agent: *robot
User-agent: *Yahoo Slurp
User-agent: *Alexa
User-agent: *Ask
User-agent: *bot
User-agent: *spider
User-agent: *robots.txt
User-agent: *crawl

Disallow: /images/

Disallow: /*.jpg$
Disallow: /*.JPG$
Disallow: /*gif$
Disallow: /*.zip$
Disallow: /*.doc$
Disallow: /*.exe$
Disallow: /*.pdf$
Disallow: /cgi-bin/