/usr/ is in libow-dev 3.1p1-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libowfs-dev/
/usr/share/doc/libowfs-dev/examples/
/usr/share/doc/libowfs-dev/examples/owcapi/
/usr/share/doc/libowfs-dev/examples/owcapi/C++/
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/include/
/usr/include/owfs_config.h
/usr/include/owcapi.h
/usr/share/
/usr/share/doc/
/usr/share/doc/libowfs-dev/examples/owcapi/C++/owcapiexample.cpp
/usr/share/doc/libowfs-dev/examples/owcapi/C++/Makefile
/usr/share/doc/libowfs-dev/examples/owcapi/C/
/usr/share/doc/libowfs-dev/examples/owcapi/C/Makefile
/usr/share/doc/libowfs-dev/examples/owcapi/C/owcapiexample.c
/usr/share/doc/libow-dev/
/usr/share/doc/libow-dev/copyright
/usr/share/man/
/usr/share/man/man1/
/usr/share/man/man1/owcapi.1.gz
/usr/lib/x86_64-linux-gnu/libow.so
/usr/lib/x86_64-linux-gnu/libowcapi.so
/usr/share/doc/libow-dev/changelog.Debian.gz
/usr/share/man/man1/libowcapi.1.gz