----- Original Message -----
Sent: 8/31/2011 7:48:53 PM
Subject: Re: missing modules
owens@netptc.net wrote: 
> This is probably an Apache issue but with so much expertise on this 
> list I thought I'd try here first. 
The debian-user list is available for all questions about using 
Debian. This question seems perfectly on topic here. :-) 
> The problem is on my system these modules do not exist (either in 
> mods-available or mods-enabled). 
They should exist. Look for these files: 
/etc/apache2/mods-available/userdir.conf 
/etc/apache2/mods-available/userdir.load 
Those files are part of the apache2.2-common package which is a 
dependency pulled in by the apache2 package. 
$ sudo apt-get install apache2 
If you wish to verify your installation you might look at the files 
listed in the apache2.2-common package: 
$ dpkg --listfiles apache2.2-common | grep userdir 
/etc/apache2/mods-available/userdir.load 
/etc/apache2/mods-available/userdir.conf 
You might also try looking at the md5sums associated with the package. 
$ sudo apt-get install debsums 
$ debsums --config apache2.2-common | grep userdir 
/etc/apache2/mods-available/userdir.load OK 
/etc/apache2/mods-available/userdir.conf OK 
> Googling has found some Apache2 configurations with the modules 
> available and enabled and others with the modules available but not 
> enabled but none with my configuration. 
You mentioned mods-available and mods-enabled but those files should 
be there. But just in case let me walk through the steps for others 
that might be reading along with us. 
$ sudo a2enmod userdir 
$ sudo service apache2 restart 
Your apache configuration file is by default in the 
/etc/apache2/sites-available/default file but possibly in another file 
that you configured for it. I like to explicitly configure the 
directory. Because I use a different default and because other 
modules such as the php5 module also modify it. 
Optional configuration: 
<IfModule mod_userdir.c> 
# Default is simply public_html in $HOME/public_html 
UserDir /srv/www/public_html 
</IfModule> 
YMMV. 
> Any suggestions (I would hate to reinstall Apache2 but if I must I must)? 
Even re-installing apache isn't difficult. It is the apache2.2-common 
module you would want. Make sure you have a backup of your 
/etc/apache2/sites-available/default and 
/etc/apache2/sites-available/default-ssl files which should be the 
only ones from the package that you would configure. 
apt-get install --reinstall apache2.2-common 
Bob 
Here is the latest-very frustrating.  I can view the contents of apache2.2-common for my O/S (squeeze) in the repository and verify that userdir is present.  However when I remove and reinstall apache2-common the module does not exist (either in mods-available or mods-enabled).  Although it should not produce a different result I also purged and reinstalled Apache2-same result.
Larry