Drush does not inherit groups correctly.

Drush does not inherit groups correctly.

I just wrote a quick bash program to set up all my permissions on my site. Seems to work well.
My user is onryo and my group is www-data. On a ubuntu lucid LAMP

When I do something like “drush dl” the module ends up with the right owner but the group is not right. The permissions are also only for the user. I have added both myself and drush to the www-data group but no dice.

How do I fix this problem? I want my added modules to inherit onryo:www-data.

All directories:
750 onryo:www-data

All files for drupal
640 onryo:www-data
440 onryo:www-data on setup.php and default.setup.php scrips (manual)

Files under sites (So files really get removed/added off/to the FS when needed)
660 onryo:www-data

I installed drush from src and made a alias in .bashrc. Works fine.

#!/bin/bash

# onyros permissions script. 

### Configure script

# The script will ask you for your user name. Mine ie is onryo
# The script will then ask you for your server group name SERVERGROUP often it is www-data.
# but you can find it like this.
# ps aux | grep apache . Or you can "cat /etc/apache2/envvars | grep APACHE_RUN"

# I made sure to enter the paths statically. You mess this one up and you will commit suicide :)
#Full path to drupal root. ie /var/www/domain1/public/ 
drupal_root="/var/www/domain4/public"

#Full Path to the sites folder
sites_folder="/var/www/domain4/public/sites"

##### END configuration

##### begin script. no editing below this is neccesary

# enter your user name when asked.
echo The name of the user ie your USERNAME:
read USERNAME
# enter your server group when asked. 
echo The name of the server group ie your SERVERGROUP:
read SERVERGROUP
echo "Entering drupal root dir"
cd ${drupal_root}
chown -R ${USERNAME}:${SERVERGROUP} .
echo "Changing drupel permissions"
find . -type d -exec chmod u=rwx,g=rx,o= {} \;
find . -type f -exec chmod u=rw,g=r,o= {} \;
echo "Changing site dir permissions"
cd ${sites_folder}
find . -type d -exec chmod ug=rwx,o= {} \;
find . -type f -exec chmod ug=rw,o= {} \;
echo "All done now!"