Fixed python interpreter directives (#1667)

Changed the interpreter directives from '#!/usr/bin/python' to
'#!/usr/bin/env python' so the OpenThread tests can be run
inside a python virtualenv.

tests/scripts/thread-cert/Cert_5_1_01_RouterAttach.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_1_02_ChildAddressTimeout.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_1_03_RouterAddressReallocation.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_1_04_RouterAddressReallocation.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_1_05_RouterAddressTimeout.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_1_06_RemoveRouterId.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_1_07_MaxChildCount.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_1_08_RouterAttachConnectivity.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_1_09_REEDAttachConnectivity.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_1_10_RouterAttachLinkQuality.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_1_11_REEDAttachLinkQuality.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_1_12_NewRouterNeighborSync.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_1_13_RouterReset.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_2_01_BecomeActiveRouter.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_2_02_LeaderReject1Hop.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_2_03_LeaderReject2Hops.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_2_04_REEDUpgrade.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_2_05_AddressQuery.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_2_06_RouterDowngrade.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_2_07_REEDSynchronization.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_3_01_LinkLocal.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_3_02_RealmLocal.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_3_03_AddressQuery.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_3_04_AddressMapCache.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_3_05_RoutingLinkQuality.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_3_06_RouterIdMask.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_3_06b_RouterIdMask.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_3_07_DuplicateAddress.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_3_08_ChildAddressSet.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_3_09_AddressQuery.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_3_10_AddressQuery.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_5_01_LeaderReset.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_5_02_LeaderReboot.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_5_03_SplitMergeChildren.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_5_04_SplitMergeRouters.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_5_05_SplitMergeREED.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_5_07_SplitMergeThreeWay.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_5_08_SplitRoutersLostLeader.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_6_01_NetworkDataRegisterBeforeAttachLeader.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_6_02_NetworkDataRegisterBeforeAttachRouter.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_6_03_NetworkDataRegisterAfterAttachLeader.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_6_04_NetworkDataRegisterAfterAttachRouter.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_6_05_NetworkDataRegisterAfterAttachRouter.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_6_06_NetworkDataExpiration.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_6_07_NetworkDataRequestREED.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_6_08_ContextManagement.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_6_09_NetworkDataForwarding.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_8_01_KeySynchronization.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_8_02_KeyIncrement.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_5_8_03_KeyIncrementRollOver.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_1_01_RouterAttach.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_1_02_REEDAttach.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_1_03_RouterAttachConnectivity.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_1_04_REEDAttachConnectivity.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_1_05_RouterAttachLinkQuality.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_1_06_REEDAttachLinkQuality.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_1_07_EDSynchronization.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_2_01_NewPartition.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_2_02_NewPartition.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_3_01_OrphanReattach.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_3_02_NetworkDataUpdate.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_4_01_LinkLocal.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_4_02_RealmLocal.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_5_01_ChildResetSynchronize.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_5_02_ChildResetReattach.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_6_01_KeyIncrement.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_6_6_02_KeyIncrementRollOver.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_7_1_01_BorderRouterAsLeader.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_7_1_02_BorderRouterAsRouter.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_7_1_03_BorderRouterAsLeader.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_7_1_04_BorderRouterAsRouter.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_7_1_05_BorderRouterAsRouter.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_8_1_01_Commissioning.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_8_1_02_Commissioning.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_8_2_01_JoinerRouter.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_8_2_02_JoinerRouter.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_9_2_04_ActiveDataset.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_9_2_07_DelayTimer.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_9_2_08_PersistentDatasets.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_9_2_09_PendingPartition.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_9_2_10_PendingPartition.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_9_2_11_MasterKey.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_9_2_12_Announce.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_9_2_13_EnergyScan.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_9_2_14_PanIdQuery.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_9_2_15_PendingPartition.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_9_2_16_ActivePendingPartition.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_9_2_17_Orphan.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Cert_9_2_18_RollBackActiveTimestamp.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Test_Cli.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Test_MacScan.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/Test_otLwf.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/__init__.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/coap.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/common.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/config.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/ipv6.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/lowpan.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/mac802154.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.

tests/scripts/thread-cert/message.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #  Copyright (c) 2016, The OpenThread Authors.
 #  All rights reserved.