sed -i 's|#host_uuid = "00000000-0000-0000-0000-000000000000"|host_uuid = \"'$(uuidgen)'\"|g' /etc/libvirt/libvirtd.conf
sed -i 's|#host_uuid = "00000000-0000-0000-0000-000000000000"|host_uuid = \"'$(uuidgen)'\"|g' /etc/libvirt/libvirtd.conf