The robots.txt file is designed to provide spiders and crawlers with a list of places they should NOT go - it's described as the "robot exclusion standard" file and its intent is to allow the webmaster to segregate his site into indexable and non-indexable.

But because it lists directorys to be excluded, robots.txt is often an excellent source of links people don't want to be found. I have numerous examples that I've seen (and will NOT reproduce here!) where directories that are not for public consumption are listed. And - in theory - I'm perfectly at liberty to read the site's robots.txt with a regular browser then step through the places that robots are excluded manually to see what's there.

If you want to protect areas of your site from prying eyes / accidental discovery, do NOT rely on robots.txt - use a passwording system or some other form of authentication.

Our robots.txt file - which I'll happily reproduce here - lists URLs that I don't mind people finding - I just don't want them indexed. So even if they're looking with malicious intent - which I doubt - they won't "get" anywhere.

#
# robots.txt file for www.wellho.net and www.wellho.co.uk
#
# we encourage robots to visit and index almost ALL documents
# but not any executable scripts.
#
User-agent: *
Disallow: /cgi-bin/
Disallow: /net/unique.html

So all robots are allowed anywhere EXCEPT to cgi scripts, which we don't want indexed. On our site, all such scripts change their reports regularly and depending on the information entered, and so it would be misleading to encourage indexers to list them.

The /net/unique.html page is sortof-internal. It's generated by one of our site scripts and lists words that occur only once on the rest of the site. Purpose? to help us find spelling mistakes! I don't mind anyone seeing the page - and indeed I've just provide you with a link to it in this article - but people REALLY won't want to land there when they do a search!
(written 2007-01-13, updated 2007-01-17)

 W603 - Web and Intranet - Server Side Technologies
  [642] How similar are two words - (2006-03-11)
  [653] Easy feed! - (2006-03-21)
  [732] Where is a web site visitor browsing from - (2006-05-24)
  [1020] Parallel processing in PHP - (2007-01-03)
  [1355] .php or .html extension? Morally Static Pages - (2007-09-17)
  [1365] Korn Shell scripts on the web - (2007-09-25)
  [1554] Online hotel reservations - Melksham, Wiltshire (near Bath) - (2008-02-24)
  [1615] PHP training courses every month - (2008-04-18)
  [1749] Using server side and client side programming together - (2008-08-11)
  [2055] Effect on server when memory runs out and swapping starts - (2009-02-26)
  [2282] Checking robots.txt from Python - (2009-07-12)
  [3705] Django Training Courses - UK - (2012-04-23)
  [3915] How does PHP work? - (2012-11-07)
  [4277] Sending a message to the server and changing text on a page when a button is pressed - (2014-05-23)

W501 - Introduction to Web Site Structure
  [332] Looking up IP addresses - (2005-06-01)
  [528] Getting favicon to work - avoiding common pitfalls - (2005-12-14)
  [1024] Web site - a refresh to improve navigation - (2007-01-07)
  [1168] Moving out some of the web site bloat - (2007-04-29)
  [1176] A pu that got me into trouble - (2007-05-04)
  [1198] From Web to Web 2 - (2007-05-21)
  [1431] Getting the community on line - some basics - (2007-11-13)
  [1636] What to do if the Home Page is missing - (2008-05-08)
  [1686] FTP - how not to corrupt data (binary v ascii) - (2008-06-24)
  [1969] Search Engines. Getting the right pages seen. - (2009-01-01)
  [2094] If you have a spelling mistake in your URL / page name - (2009-03-21)
  [2214] Global Index to help you find resources - (2009-06-01)
  [2552] Web site traffic - real users, or just noise? - (2009-12-26)

P608 - Perl - Robots, Crawlers and Spiders
  [2045] Does robots.txt actually work? - (2009-02-16)
  [2229] Do not re-invent the wheel - use a Perl module - (2009-06-11)
  [2402] Automated Browsing in Perl - (2009-09-11)

Back to Hotel for Trowbridge

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Forward to Chronic fatigue help - a new discussion forum

Longer hours and better value courses
The new web site look spreads
Empty at Easleigh, Missing at Melksham, Overflowing at Oldfield
Chronic fatigue help - a new discussion forum
robots.txt - a clue to hidden pages?
Hotel for Trowbridge
Our search engine placement is dropping.
Linux / Unix - process priority and nice
Cue the music, I'm happy.
The Wheatsheaf 2, The Bell 0