Robots dot text for all user files?

robots.txt all public_html

[kj6loh]

Is there a way to include deny access to all user public_html directories, yet allow access to the main site (to spiders that is).
or do I just have to just tell the users to put a robots.txt file in their public_html directories.

[bakedjake]

Welcome to WebmasterWorld, kj6loh. (That's a callsign I assume - KC8ORV here).

If all users are under a subdirectory, just disallow that subdirectory. For example, if you have:

/users/allan
/users/bob
/users/felix

Then just disallow /users.

[kj6loh]

Ok, that's simpler than I thought then thanks. But then how will spiders/robots actually read the file? If user dirs are in /home and the www server sees /home/user/public_html, how is a robots.txt file going to be effective? Wouldn't each user have to put in in their public_html dir?
IE.
/home/usern/public_html
index.html
robots.txt
...

[kj6loh]

Sorry, just a brainfart, I understand and thanks. And yes it is a callsign.