/usr/ is in libfontembed-dev 1.20.2-0ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/fontembed/
/usr/include/fontembed/bitset.h
/usr/include/fontembed/embed.h
/usr/include/fontembed/fontfile.h
/usr/include/fontembed/iofn.h
/usr/include/fontembed/sfnt.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/libfontembed.a
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libfontembed.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libfontembed-dev/
/usr/share/doc/libfontembed-dev/copyright
/usr/lib/x86_64-linux-gnu/libfontembed.so
/usr/share/doc/libfontembed-dev/AUTHORS
/usr/share/doc/libfontembed-dev/NEWS.Debian.gz
/usr/share/doc/libfontembed-dev/README.gz
/usr/share/doc/libfontembed-dev/changelog.Debian.gz