/usr/ is in libetonyek-dev 0.0.3-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libetonyek-0.0.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libetonyek-dev/
/usr/share/doc/libetonyek-dev/README
/usr/share/doc/libetonyek-dev/TODO
/usr/share/doc/libetonyek-dev/NEWS.gz
/usr/share/doc/libetonyek-dev/copyright
/usr/include/
/usr/include/libetonyek-0.0/
/usr/include/libetonyek-0.0/libetonyek/
/usr/include/libetonyek-0.0/libetonyek/KEYDocument.h
/usr/include/libetonyek-0.0/libetonyek/libetonyek.h
/usr/include/libetonyek-0.0/libetonyek/KEYStringVector.h
/usr/include/libetonyek-0.0/libetonyek/KEYPresentationInterface.h
/usr/lib/x86_64-linux-gnu/libetonyek-0.0.so
/usr/share/doc/libetonyek-dev/changelog.Debian.gz