libapache2-mod-authz-unixgroup software package provides access control based on on unix group membership for Apache, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libapache2-mod-authz-unixgroup
libapache2-mod-authz-unixgroup is installed in your system.
Make ensure the libapache2-mod-authz-unixgroup package were installed using the commands given below,
$ sudo dpkg-query -l | grep libapache2-mod-authz-unixgroup*
You will get with libapache2-mod-authz-unixgroup package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Web Servers |
| Package | libapache2-mod-authz-unixgroup |
| Version | 1.0.2-1+b1 [powerpc], 1.0.2-1 |
| Description | access control based on on unix group membership for Apache |
| Sub Section | httpd |