040000 tree efbf855b680a021c235484b48fc6bca77c8313ae	hello_0
040000 tree 47c7dba372d68cfca16adb10853cb2a3255297fc	hello_1
040000 tree 25d4d193bd4bd714d46e5aa58db97ce40c6e2ad8	hello_2
040000 tree c465c37bc3562ae53e99207386b1cb524d06b84e	hello_knr
040000 tree 1969906fa4ceb3ae290e84b9a9b13ed2a3d6b1ec	make
040000 tree 8fbcafa56a599ceaec8380955fd415d5f4a8cbf4	monitor
040000 tree 215437a31e655dfa684796d9c2402352202b4a03	rand