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 46 to 396: The code is about checking the validity of the polynomials.
Line 554 to 573: parameters are written if there is an input from the user.
Line 574: Execution of the command to generate the image.
Line 580: pbm to gif generated.
Line 594: gif is displayed.

The directory "/var/www/demos/files/encoding" has permission

drwxrwsrwx 2 apache ipgdemos 20480 2008-08-17 18:06 encoding

Inside the directory "/var/www/demos/files/encoding" there are two files for a seesion.

• param contains the parameter of the ensembles and suffixed by session id.
  
• gif file It is the gif image of the triangulated matrix and its name is
  

based on the session id. All these files have 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.