Robots.txt Also known as robots exclusion etiquett

Robots.txt Also known as robots exclusion etiquette, Robots.txt is a text file stored in a site's source directory that tells a search engine Crawler which site pages and sub-folders should not be included in the search engine Index. However, there is no guarantee that a Crawler will comply with this demand. Robots.txt is an alternative to a Meta Robots Tag or password protection.