/usr/ is in libalkimia5-dev 7.0.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/alkimia/
/usr/include/alkimia/Qt5/
/usr/include/alkimia/Qt5/alkimia/
/usr/include/alkimia/Qt5/alkimia/alk_export.h
/usr/lib/x86_64-linux-gnu/libalkimia5.so
/usr/include/alkimia/Qt5/alkimia/alkcompany.h
/usr/include/alkimia/Qt5/alkimia/alkquoteitem.h
/usr/include/alkimia/Qt5/alkimia/alkvalue.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/LibAlkimia5-7.0/
/usr/lib/x86_64-linux-gnu/cmake/LibAlkimia5-7.0/FindGMP.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibAlkimia5-7.0/LibAlkimia5Config.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibAlkimia5-7.0/LibAlkimia5ConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibAlkimia5-7.0/LibAlkimia5Targets-none.cmake
/usr/lib/x86_64-linux-gnu/cmake/LibAlkimia5-7.0/LibAlkimia5Targets.cmake
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libalkimia5.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libalkimia5-dev/
/usr/share/doc/libalkimia5-dev/copyright
/usr/share/doc/libalkimia5-dev/changelog.Debian.gz