/usr/lib/x86_64-linux-gnu/ is in libroot-core-dev 5.34.14-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/root5.34/
/usr/lib/x86_64-linux-gnu/root5.34/python/
/usr/lib/x86_64-linux-gnu/root5.34/python/genreflex/
/usr/lib/x86_64-linux-gnu/root5.34/python/genreflex/genheader.py
/usr/lib/x86_64-linux-gnu/root5.34/python/genreflex/selclass.py
/usr/lib/x86_64-linux-gnu/root5.34/python/genreflex/gencapa.py
/usr/lib/x86_64-linux-gnu/root5.34/python/genreflex/gendict.py
/usr/lib/x86_64-linux-gnu/root5.34/python/genreflex/gccdemangler.py
/usr/lib/x86_64-linux-gnu/root5.34/python/genreflex/genreflex.py
/usr/lib/x86_64-linux-gnu/root5.34/python/genreflex/genreflex-rootcint.py
/usr/lib/x86_64-linux-gnu/root5.34/python/genreflex/gccxmlpath.py
/usr/lib/x86_64-linux-gnu/root5.34/python/genreflex/genrootmap.py
/usr/lib/x86_64-linux-gnu/libNew.so
/usr/lib/x86_64-linux-gnu/libReflex.so
/usr/lib/x86_64-linux-gnu/libCintex.so
/usr/lib/x86_64-linux-gnu/libCint.so
/usr/lib/x86_64-linux-gnu/libReflexDict.so
/usr/lib/x86_64-linux-gnu/libCore.so
/usr/lib/x86_64-linux-gnu/libRint.so
/usr/lib/x86_64-linux-gnu/libThread.so