/usr/ is in libtrilinos-shylu-dev 12.12.1-5.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/ShyLU/
/usr/include/
/usr/include/trilinos/
/usr/include/trilinos/IQRSolver.h
/usr/include/trilinos/Ifpack_ShyLU.h
/usr/include/trilinos/ShyLUCore_config.h
/usr/include/trilinos/shylu.h
/usr/include/trilinos/shylu_amesos_schur_operator.h
/usr/include/trilinos/shylu_config.h
/usr/include/trilinos/shylu_debug_manager.hpp
/usr/include/trilinos/shylu_directsolver_interface.hpp
/usr/include/trilinos/shylu_directsolver_interface_decl.hpp
/usr/include/trilinos/shylu_directsolver_interface_def.hpp
/usr/include/trilinos/shylu_internal.h
/usr/include/trilinos/shylu_internal_gmres.h
/usr/include/trilinos/shylu_internal_gmres_tools.h
/usr/include/trilinos/shylu_local_schur_operator.h
/usr/include/trilinos/shylu_partition_interface.hpp
/usr/include/trilinos/shylu_partition_interface_decl.hpp
/usr/include/trilinos/shylu_partition_interface_def.hpp
/usr/include/trilinos/shylu_probing_operator.h
/usr/include/trilinos/shylu_symbolic.h
/usr/include/trilinos/shylu_util.h
/usr/lib/x86_64-linux-gnu/cmake/ShyLU/ShyLUConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/ShyLUCore/
/usr/lib/x86_64-linux-gnu/cmake/ShyLUCore/ShyLUCoreConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/ShyLUCore/ShyLUCoreTargets-none.cmake
/usr/lib/x86_64-linux-gnu/cmake/ShyLUCore/ShyLUCoreTargets.cmake
/usr/share/
/usr/share/doc/
/usr/share/doc/libtrilinos-shylu-dev/
/usr/share/doc/libtrilinos-shylu-dev/copyright
/usr/lib/x86_64-linux-gnu/libtrilinos_shylu.so
/usr/share/doc/libtrilinos-shylu-dev/changelog.Debian.gz