/usr/ is in libgdchart-gd2-noxpm-dev 0.11.5-7.1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/gdchart.h
/usr/include/gdc.h
/usr/include/array_alloc.h
/usr/include/gdcpie.h
/usr/lib/
/usr/lib/libgdc.a
/usr/share/
/usr/share/doc/
/usr/share/doc/libgdchart-gd2-noxpm-dev/
/usr/share/doc/libgdchart-gd2-noxpm-dev/copyright
/usr/share/doc/libgdchart-gd2-noxpm-dev/examples/
/usr/share/doc/libgdchart-gd2-noxpm-dev/examples/gdc_samp1.c
/usr/share/doc/libgdchart-gd2-noxpm-dev/examples/ft_samp.c
/usr/share/doc/libgdchart-gd2-noxpm-dev/examples/gdc_pie_samp.c
/usr/share/doc/libgdchart-gd2-noxpm-dev/examples/gdc_samp2.c
/usr/lib/libgdc.so
/usr/share/doc/libgdchart-gd2-noxpm-dev/README
/usr/share/doc/libgdchart-gd2-noxpm-dev/changelog.Debian.gz