Web
pages are useful, but if you’ve ever wanted to find a specific file on
the web, you noticed it’s not very easy. Fortunately, search engines
like Google could be used for this tricky task.
Sometimes people
create a web site, put some files in a directory, but forget to add an
index file. So they end up with an unprotected directory that lists all
of its files and subdirectories, when directly accessed from a browser.
If someone links to the directory or submits it to Google, it becomes
available to anyone who performs a search.
Because these
directory listings are built using similar templates (depending on the
web server), you can add to your query the most distinctive traits:
* The title starts with “index of” -> add to the Google query: intitle:”index of”
*
They typically contain these words: “parent directory”, name, “last
modified”, size, description -> you can add to your query “parent directory”, for example
* Since most sites use Apache servers, you could also add Apache, that appears in the footer of a listing for Apache web servers
To find the page from the screenshot, you could use a query like:
intitle:”index of” firefox 2.0 rc1 source
Of course, you could use this idea to find any kind of file from a PDF e-book to an MP3 podcast or song. Some of the files are shared by breaking a copyright law, so you must you use your judgment before downloading them.
But
finding files using this technique is too complicated, you’ll say.
First you have to enter a very complicated query, then visit all these
strange-looking web pages and perform a new search in the current page
to actually find the file. Then there are so many dead links and
disingenuous webmasters that try to trick you with fake pages.
Some people with too much time on their hands built web apps that make it easy to search for files using Google. Briefli
builds the query internally, loads the first results from Google and
displays the links to the files on the same page. Moreover, the files
that actually match your query are highlighted. To play the MP3s
inline, you could add the del.icio.us bookmarklet to your browser and for Office files and PDFs, use Docufarm.
A site optimized for finding and playing MP3 files is mp3Salad.
It lets you play all the MP3 files from a directory using a simple
Flash player and even export the entire listing as a playlist.
The
avalanche of file hosting sites brought a new to search for files:
restrict the search results to one or more of these sites. Some
examples of popular file hosting sites: esnips.com or megaupload.com. This custom search engine lets you restrict the search to 127 file hosting sites.
And then there are BitTorrent sites. Because they’re so many, this custom search engine is useful to search across the most popular ones.
Google actually indexes some of these files,
mostly Office documents, PDF files, text files. You can restrict a
Google search to a file type by using the filetype: operator in your
query (examples: bash linux filetype:pdf
restrict the search for [bash linux] to PDF files). This way you can
search inside these files and not only in a listing of filenames.
For files residing on your hard disk, a desktop search engine like Google Desktop (Windows/Mac/Linux), Windows Vista’s search, Mac’s Spotlight are great and should be used before searching on the web.
Maybe
one day Google will come up with a nice file search engine that indexes
unprotected directories, FTP servers, file hosting sites, torrent
sites. But probably the legal challenges outweigh the advantages of a
such a search engine (Yahoo has a music search engine, but only for China). “
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As for Torrents, there are two more sites i’d like to mention.
and
Note: These google torrent search engine should be a last resort, as they do not display number of seeders, leechers, or downloads.
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