/usr/ is in libundead-dev 1.0.9-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/d/
/usr/include/d/undead/
/usr/include/d/undead/bitarray.d
/usr/include/d/undead/cstream.d
/usr/include/d/undead/date.d
/usr/include/d/undead/datebase.d
/usr/include/d/undead/dateparse.d
/usr/include/d/undead/doformat.d
/usr/include/d/undead/internal/
/usr/include/d/undead/internal/file.d
/usr/include/d/undead/metastrings.d
/usr/include/d/undead/regexp.d
/usr/include/d/undead/socketstream.d
/usr/include/d/undead/stream.d
/usr/include/d/undead/string.d
/usr/include/d/undead/utf.d
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/undead.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libundead-dev/
/usr/share/doc/libundead-dev/copyright
/usr/lib/x86_64-linux-gnu/libundead.so
/usr/share/doc/libundead-dev/changelog.Debian.gz