sudo grep -ir namevirtualhost /etc/apache2
/etc/apache2/sites-available/ssl:NameVirtualHost *:443
/etc/apache2/sites-available/default:NameVirtualHost *:80
/etc/apache2/sites-enabled/ssl:NameVirtualHost *:443
/etc/apache2/sites-enabled/000-default:NameVirtualHost *:80
/etc/apache2/sites-enabled/ssl.bak:NameVirtualHost *