/usr/ is in libtrilinos-trilinosss-dev 12.12.1-5.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/trilinos/
/usr/include/trilinos/trilinos_UFconfig.h
/usr/include/trilinos/trilinos_amd.h
/usr/include/trilinos/trilinos_amd_internal.h
/usr/include/trilinos/trilinos_btf_decl.h
/usr/include/trilinos/trilinos_btf_internal.h
/usr/include/trilinos/trilinos_camd.h
/usr/include/trilinos/trilinos_camd_internal.h
/usr/include/trilinos/trilinos_ccolamd.h
/usr/include/trilinos/trilinos_colamd.h
/usr/include/trilinos/trilinos_klu_decl.h
/usr/include/trilinos/trilinos_klu_internal.h
/usr/include/trilinos/trilinos_klu_version.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/TrilinosSS/
/usr/lib/x86_64-linux-gnu/cmake/TrilinosSS/TrilinosSSConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/TrilinosSS/TrilinosSSTargets-none.cmake
/usr/lib/x86_64-linux-gnu/cmake/TrilinosSS/TrilinosSSTargets.cmake
/usr/share/
/usr/share/doc/
/usr/share/doc/libtrilinos-trilinosss-dev/
/usr/share/doc/libtrilinos-trilinosss-dev/copyright
/usr/lib/x86_64-linux-gnu/libtrilinos_trilinosss.so
/usr/share/doc/libtrilinos-trilinosss-dev/changelog.Debian.gz