function usage {
 echo "Usage: $0 [option...]" >&2
 echo
 echo "   -e,    Enable Netdata"
 echo "   -d,    Disable Netdata"
 echo
}


if [ -n "$1" ]; then

if [ "$1" = "-d" ]; then
 echo "Disable Netdata"
 sed -i '/deny all; #enables\/disables Netdata/c\        deny all; #enables\/disables Netdata' /etc/nginx/sites-available/Backend
 systemctl stop netdata
 systemctl disable netdata > /dev/null 2>&1
 systemctl reload nginx
elif [ "$1" = "-e" ]; then
 echo "Enable Netdata"
 sed -i '/deny all; #enables\/disables Netdata/c\        #deny all; #enables\/disables Netdata' /etc/nginx/sites-available/Backend
 systemctl start netdata
 systemctl enable netdata > /dev/null 2>&1
 systemctl reload nginx
else
 usage
fi
else
 usage
fi