Does the simple presence of an index.html prevent the contents of a directory from being browsed? Is there an HTTP command to request a directory listing? I'm a little unclear on this issue, and help is appreciated.
true, but probably 99.99% of the servers out there are setup for it. actually it can be set for anything, but most often index.html index.htm, index.php, index.cgi, etc. i think that you can set priorities on which one will work if you have more than one in a directory. I know that on my servers, index.php will work even when there is an index.html file present.