/usr/share/HepMC/examples/ is in hepmc-examples 2.06.09-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/HepMC/examples/GNUmakefile
/usr/share/HepMC/examples/VectorConversion.h
/usr/share/HepMC/examples/example_BuildEventFromScratch.cc
/usr/share/HepMC/examples/example_EventSelection.cc
/usr/share/HepMC/examples/example_UsingIterators.cc
/usr/share/HepMC/examples/example_UsingIterators.txt
/usr/share/HepMC/examples/example_VectorConversion.cc
/usr/share/HepMC/examples/fio/
/usr/share/HepMC/examples/fio/GNUmakefile
/usr/share/HepMC/examples/fio/PythiaHelper.h
/usr/share/HepMC/examples/fio/README.examples
/usr/share/HepMC/examples/fio/example_MyHerwig.cc
/usr/share/HepMC/examples/fio/example_MyPythia.cc
/usr/share/HepMC/examples/fio/example_MyPythiaOnlyToHepMC.cc
/usr/share/HepMC/examples/fio/example_PythiaStreamIO.cc
/usr/share/HepMC/examples/fio/initPythia.cc
/usr/share/HepMC/examples/fio/initpydata.f
/usr/share/HepMC/examples/fio/testHerwigCopies.cc
/usr/share/HepMC/examples/fio/testPythiaCopies.cc
/usr/share/HepMC/examples/pythia8/
/usr/share/HepMC/examples/pythia8/GNUmakefile
/usr/share/HepMC/examples/pythia8/main31.cc
/usr/share/HepMC/examples/pythia8/main32.cc
/usr/share/HepMC/examples/pythia8/main32.cmnd