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Using robots.txt to block spiders crawling your web site


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'Robots.txt' is a plain text file that through its name has special meaning to most decent robots on the web. By defining a few rules in this text file instruct robots to not crawl and index certain files or directories within your site.

If you do not want Google to crawl your site's /pictures folder, you can protect this folder from Google's crawler.

The following gives a few examples how to write a robots.txt file. It has to be placed in the www root directory of your server. On Linux boxes, this is typically /var/www/html.

The following example shows several versions of robots.txt files, separated by a line.

; block Google's image crawler completely User-agent: Googlebot-Image Disallow: /
; block all spiders and bots from those 2 directories User-agent: * Disallow: /cgi-bin/ Disallow: /pictures/
; allow Googlebot to access everything except /cgi-bin ; and all other bots can access nothing ; finally allow ia_archive ( to access everything! User-agent: * Disallow: / User-agent: Googlebot Disallow: /cgi-bin/ User-agent: ia_archiver Allow: /

Content-type: text/html


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2017-03-16, 09:38:37
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