/usr/ is in libwxgtk2.6-dev 2.6.3.2.2-5ubuntu4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/libwx_gtk2u_fl-2.6.so
/usr/lib/libwx_gtk2u_adv-2.6.so
/usr/share/
/usr/share/doc/
/usr/share/doc/libwxgtk2.6-dev/
/usr/share/doc/libwxgtk2.6-dev/copyright
/usr/lib/
/usr/lib/wx/
/usr/lib/wx/include/
/usr/lib/wx/include/gtk2-unicode-release-2.6/
/usr/lib/wx/include/gtk2-unicode-release-2.6/wx/
/usr/lib/wx/include/gtk2-unicode-release-2.6/wx/setup.h
/usr/lib/wx/config/
/usr/lib/wx/config/gtk2-unicode-release-2.6
/usr/share/doc/libwxgtk2.6-dev/changelog.Debian.gz
/usr/lib/libwx_gtk2u_media-2.6.so
/usr/lib/libwx_gtk2u_ogl-2.6.so
/usr/lib/libwx_gtk2u_deprecated-2.6.so
/usr/lib/libwx_gtk2u_svg-2.6.so
/usr/lib/libwx_gtk2u_plot-2.6.so
/usr/lib/libwx_gtk2u_gizmos_xrc-2.6.so
/usr/lib/libwx_gtk2u_animate-2.6.so
/usr/lib/libwx_gtk2u_qa-2.6.so
/usr/lib/libwx_gtk2u_gl-2.6.so
/usr/lib/libwx_gtk2u_stc-2.6.so
/usr/lib/libwx_gtk2u_xrc-2.6.so
/usr/lib/libwx_gtk2u_core-2.6.so
/usr/lib/libwx_gtk2u_html-2.6.so
/usr/lib/libwx_gtk2u_gizmos-2.6.so