/usr/ is in libcolumbus1-dev 1.1.0+15.10.20150806-0ubuntu12.
This file is owned by root:root, with mode 0o755.
..
/usr/include/columbus1/
/usr/include/
/usr/include/columbus1/ColumbusCore.hh
/usr/include/columbus1/ColumbusHelpers.hh
/usr/include/columbus1/Corpus.hh
/usr/include/columbus1/Document.hh
/usr/include/columbus1/ErrorValues.hh
/usr/include/columbus1/IndexWeights.hh
/usr/include/columbus1/MatchResults.hh
/usr/include/columbus1/Matcher.hh
/usr/include/columbus1/Word.hh
/usr/include/columbus1/WordList.hh
/usr/include/columbus1/columbus.h
/usr/include/columbus1/columbus.hh
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libcolumbus.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libcolumbus1-dev/
/usr/share/doc/libcolumbus1-dev/copyright
/usr/lib/x86_64-linux-gnu/libcolumbus.so
/usr/share/doc/libcolumbus1-dev/changelog.Debian.gz