The file permissions are the same as were there on lthcwww.
The directory "/var/www/demos/encoding" has permission

drwxrwSr-x  2 rathi  ipgdemos 4096 2008-08-21 23:50 encoding

This is the directory structure of "/var/www/demos/ensembles"
with permissions.

-rwxrwxr-x 1 rathi ipgdemos  50141 2008-07-25 16:58 encoding
-rwxrwxrwx 1 rathi ipgdemos    171 2008-08-14 22:35 encodingparameters
-rwxrwxrwx 1 rathi ipgdemos 250262 2008-08-17 20:08 hmatrix.pbm
-rw-rw-r-- 1 rathi ipgdemos  12226 2008-08-15 19:55 index.php
-rw-rw-r-- 1 rathi ipgdemos   4893 2008-08-14 13:40 lthc_index.php

The file "lthc_index.php" has the old lthc way of giving inputs.

Line 33 to 400: The code is about checking the validity of the polynomials.
Line 571 to 584: parameters are written.
Line 585 to 593: System commands to generate, plot in ps and convert to gif.
Line 622: Rate computation using the file "/var/www/demos/files/ensembles/tempa".
Line 648: The graph file residing in "/var/www/demos/files/ensembles/" displayed
in the text format.

The directory "/var/www/demos/files/ensembles" contains files for a
session. There are four files for a seesion and there names are suffixed
by session id's.

• param contains the parameter of the ensembles.
• graph contains the graph connections.
• tempa data for rate computation.
• tempb graph connections to generate the ps file of the graph.

All these four files have permissions: "-rw-r--r--". The ".gif" and
.ps are given names which are same as the session ids. They reside in
"/var/www/demos/files/ensembles/images" with permissions "-rw-r--r--".

There should be a "crone" job deleting the files in "/var/www/demos/files/ensembles".
The file names start with "graph, param, tempa, tempb". There are four files without
the session d suffix which should not be deleted. These should be there just for the sake
of reference. Similarly, the files in "/var/www/demos/files/ensembles/images" should be
deleted.