/usr/include/trilinos/MueLu_CoupledAggregationFactory.hpp is in libtrilinos-muelu-dev 12.4.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | #include "MueLu_CoupledAggregationFactory_decl.hpp"
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