The "Index of" search string is one of the oldest and most powerful "Google Dorks" in existence. To the average user, it looks like a broken webpage. To a seasoned researcher or developer, it is a doorway into the raw file structures of the internet.
NASA, the US Geological Survey, and many university research departments expose directory listings for public datasets. It is an efficient way to provide bulk downloads of satellite imagery, climate models, or historical records. Index of
An "Index of" page displays the contents of a directory (folder) when an index.html (or similar, like index.php or index.htm ) file is not present Apache. The "Index of" search string is one of