/usr/ is in liblua5.1-0-dev 5.1.5-8ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/lua5.1/
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/liblua5.1-c++.a
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/lua5.1.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/lua5.1-c++.pc
/usr/lib/x86_64-linux-gnu/liblua5.1.a
/usr/include/
/usr/include/lua5.1/
/usr/include/lua5.1/lualib.h
/usr/include/lua5.1/luaconf.h
/usr/include/lua5.1/lua.h
/usr/include/lua5.1/lua.hpp
/usr/include/lua5.1/lauxlib.h
/usr/include/x86_64-linux-gnu/
/usr/include/x86_64-linux-gnu/lua5.1-deb-multiarch.h
/usr/share/lua5.1/version-script
/usr/share/doc/
/usr/share/doc/liblua5.1-0-dev/
/usr/share/doc/liblua5.1-0-dev/copyright
/usr/lib/x86_64-linux-gnu/pkgconfig/lua51.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/lua-5.1-c++.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/lua-5.1.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/lua51-c++.pc
/usr/lib/x86_64-linux-gnu/liblua5.1-c++.so
/usr/lib/x86_64-linux-gnu/liblua5.1.so
/usr/share/doc/liblua5.1-0-dev/changelog.Debian.gz
/usr/share/doc/liblua5.1-0-dev/README.Debian.gz