/usr/include/ql/experimental/commodities/ is in libquantlib0-dev 1.9.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/ql/experimental/commodities/all.hpp
/usr/include/ql/experimental/commodities/commodity.hpp
/usr/include/ql/experimental/commodities/commoditycashflow.hpp
/usr/include/ql/experimental/commodities/commoditycurve.hpp
/usr/include/ql/experimental/commodities/commodityindex.hpp
/usr/include/ql/experimental/commodities/commoditypricinghelpers.hpp
/usr/include/ql/experimental/commodities/commoditysettings.hpp
/usr/include/ql/experimental/commodities/commoditytype.hpp
/usr/include/ql/experimental/commodities/commodityunitcost.hpp
/usr/include/ql/experimental/commodities/dateinterval.hpp
/usr/include/ql/experimental/commodities/energybasisswap.hpp
/usr/include/ql/experimental/commodities/energycommodity.hpp
/usr/include/ql/experimental/commodities/energyfuture.hpp
/usr/include/ql/experimental/commodities/energyswap.hpp
/usr/include/ql/experimental/commodities/energyvanillaswap.hpp
/usr/include/ql/experimental/commodities/exchangecontract.hpp
/usr/include/ql/experimental/commodities/paymentterm.hpp
/usr/include/ql/experimental/commodities/petroleumunitsofmeasure.hpp
/usr/include/ql/experimental/commodities/pricingperiod.hpp
/usr/include/ql/experimental/commodities/quantity.hpp
/usr/include/ql/experimental/commodities/unitofmeasure.hpp
/usr/include/ql/experimental/commodities/unitofmeasureconversion.hpp
/usr/include/ql/experimental/commodities/unitofmeasureconversionmanager.hpp