$ sudo -H -u www-data bash fusionpbx-clean-old-data.sh \
                                        --days <mininum-age-of-data> \
                                        --domains <all|comma-separated-list> \
                                        [--exclude <comma-separated-list>]
where:
        --days      is the minimum age (in days) the data must has to be cleaned
        --domains   a comma separated list of domains to be cleaned 
                    (e.g 'some.domain.com, another.domain') or the keyword 'all'
                    to select all available domains
        --exclude   can only be used when --domains is 'all' to exclude a comma 
                    separated list of domains of been cleaned

git clone https://github.com/guallo/fusionpbx-clean-old-data.git
cd fusionpbx-clean-old-data/

sudo cp fusionpbx-clean-old-data.sh /etc/
sudo cp fusionpbx-clean-old-data-caller /etc/cron.daily/

sudo chown root:root /etc/fusionpbx-clean-old-data.sh /etc/cron.daily/fusionpbx-clean-old-data-caller
sudo chmod 755 /etc/fusionpbx-clean-old-data.sh /etc/cron.daily/fusionpbx-clean-old-data-caller

cd ..
rm -rf fusionpbx-clean-old-data/

sudo nano /etc/cron.daily/fusionpbx-clean-old-data-caller  # Edit as needed.

sudo rm -f /etc/fusionpbx-clean-old-data.sh /etc/cron.daily/fusionpbx-clean-old-data-caller

sudo chmod -x /etc/cron.daily/fusionpbx-maintenance

sudo chmod +x /etc/cron.daily/fusionpbx-maintenance