/usr/ is in libskstream-0.3-dev 0.3.9-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/skstream-0.3/
/usr/include/
/usr/include/skstream-0.3/
/usr/include/skstream-0.3/skstream/
/usr/include/skstream-0.3/skstream/sasproto.h
/usr/include/skstream-0.3/skstream/skserver_unix.h
/usr/include/skstream-0.3/skstream/skstream_unix.h
/usr/include/skstream-0.3/skstream/skaddress.h
/usr/include/skstream-0.3/skstream/sksocket.h
/usr/include/skstream-0.3/skstream/skstream.h
/usr/include/skstream-0.3/skstream/skpoll.h
/usr/include/skstream-0.3/skstream/skserver.h
/usr/lib/x86_64-linux-gnu/skstream-0.3/include/
/usr/lib/x86_64-linux-gnu/skstream-0.3/include/skstream/
/usr/lib/x86_64-linux-gnu/skstream-0.3/include/skstream/skstreamconfig.h
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/skstream-unix-0.3.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/skstream-0.3.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libskstream-0.3-dev/
/usr/share/doc/libskstream-0.3-dev/copyright
/usr/lib/x86_64-linux-gnu/libskstream-0.3.so
/usr/share/doc/libskstream-0.3-dev/changelog.Debian.gz