040000 tree c824d3c9c3839562ef1843662d8c0cfc969e90ea	android
040000 tree 22cc39795826205c4aca3c0b2f3b9318b34c6e07	freebsd
040000 tree fe8dd160686b8ccdd5a7dd7be48173509121a2e1	linux
040000 tree 55c79d006760c81c96fa14ecb1984a69a3121c16	openbsd
040000 tree 411403b397ab637ca588f11ef55975c79cf2f09f	os2
040000 tree be00a41108d33c144c77891a78c8e38aeb98c73f	unix
040000 tree 60bee75b4cdfef8ac092eb978be3883f6224684d	windows
040000 tree 2c0b2b1d5db36c0352cacd9c7ef8d1e6c59420f4	winrt