040000 tree 0990080502d01bc8be1687650a6ed57ce81b1e06	ccnping
040000 tree d1f1d4504af4ce371888e8d0f21c0232c3219593	ccnx-trace
040000 tree da4b57617750e70d6c3bddaff96fad60c7fc1048	ccnx
040000 tree 35cc195c8ef09e653eb609261b57fee910f5ea43	ndndump
040000 tree 9adafd8dec8b599caedd4b775104c65eb229b4be	py-pyccn