diff --git a/poky/scripts/contrib/bb-perf/bb-matrix-plot.sh b/poky/scripts/contrib/bb-perf/bb-matrix-plot.sh
index 136a255..e7bd129 100755
--- a/poky/scripts/contrib/bb-perf/bb-matrix-plot.sh
+++ b/poky/scripts/contrib/bb-perf/bb-matrix-plot.sh
@@ -1,21 +1,8 @@
 #!/bin/bash
 #
 # Copyright (c) 2011, Intel Corporation.
-# All rights reserved.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 #
 # DESCRIPTION
 # This script operates on the .dat file generated by bb-matrix.sh. It tolerates
diff --git a/poky/scripts/contrib/bb-perf/bb-matrix.sh b/poky/scripts/contrib/bb-perf/bb-matrix.sh
index 1064565..b1fff0f 100755
--- a/poky/scripts/contrib/bb-perf/bb-matrix.sh
+++ b/poky/scripts/contrib/bb-perf/bb-matrix.sh
@@ -1,21 +1,8 @@
 #!/bin/bash
 #
 # Copyright (c) 2011, Intel Corporation.
-# All rights reserved.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 #
 # DESCRIPTION
 # This script runs BB_CMD (typically building core-image-sato) for all
diff --git a/poky/scripts/contrib/bb-perf/buildstats-plot.sh b/poky/scripts/contrib/bb-perf/buildstats-plot.sh
index 7e8ae04..898834e 100755
--- a/poky/scripts/contrib/bb-perf/buildstats-plot.sh
+++ b/poky/scripts/contrib/bb-perf/buildstats-plot.sh
@@ -1,21 +1,8 @@
 #!/usr/bin/env bash
 #
 # Copyright (c) 2011, Intel Corporation.
-# All rights reserved.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 #
 # DESCRIPTION
 #
diff --git a/poky/scripts/contrib/bb-perf/buildstats.sh b/poky/scripts/contrib/bb-perf/buildstats.sh
index 8d7e248..e9ec2d4 100755
--- a/poky/scripts/contrib/bb-perf/buildstats.sh
+++ b/poky/scripts/contrib/bb-perf/buildstats.sh
@@ -1,21 +1,8 @@
 #!/bin/bash
 #
 # Copyright (c) 2011, Intel Corporation.
-# All rights reserved.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 #
 # DESCRIPTION
 # Given 'buildstats' data (generate by bitbake when setting
diff --git a/poky/scripts/contrib/bbvars.py b/poky/scripts/contrib/bbvars.py
index 286b5a9..0901336 100755
--- a/poky/scripts/contrib/bbvars.py
+++ b/poky/scripts/contrib/bbvars.py
@@ -1,18 +1,6 @@
 #!/usr/bin/env python3
-
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
 #
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 #
 # Copyright (C) Darren Hart <dvhart@linux.intel.com>, 2010
 
diff --git a/poky/scripts/contrib/build-perf-test-wrapper.sh b/poky/scripts/contrib/build-perf-test-wrapper.sh
index 7cbb5d7..fa71d4a 100755
--- a/poky/scripts/contrib/build-perf-test-wrapper.sh
+++ b/poky/scripts/contrib/build-perf-test-wrapper.sh
@@ -4,15 +4,7 @@
 #
 # Copyright (c) 2016, Intel Corporation.
 #
-# This program is free software; you can redistribute it and/or modify it
-# under the terms and conditions of the GNU General Public License,
-# version 2, as published by the Free Software Foundation.
-#
-# This program is distributed in the hope it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
-# more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # This script is a simple wrapper around the actual build performance tester
 # script. This script initializes the build environment, runs
diff --git a/poky/scripts/contrib/ddimage b/poky/scripts/contrib/ddimage
index ab92995..b577d1c 100755
--- a/poky/scripts/contrib/ddimage
+++ b/poky/scripts/contrib/ddimage
@@ -1,4 +1,7 @@
 #!/bin/sh
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 
 # Default to avoiding the first two disks on typical Linux and Mac OS installs
 # Better safe than sorry :-)
diff --git a/poky/scripts/contrib/devtool-stress.py b/poky/scripts/contrib/devtool-stress.py
index d555c51..81046ec 100755
--- a/poky/scripts/contrib/devtool-stress.py
+++ b/poky/scripts/contrib/devtool-stress.py
@@ -6,18 +6,7 @@
 #
 # Copyright 2015 Intel Corporation
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along
-# with this program; if not, write to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+# SPDX-License-Identifier: GPL-2.0-only
 #
 
 import sys
diff --git a/poky/scripts/contrib/dialog-power-control b/poky/scripts/contrib/dialog-power-control
index 7550ea5..ad6070c 100755
--- a/poky/scripts/contrib/dialog-power-control
+++ b/poky/scripts/contrib/dialog-power-control
@@ -1,5 +1,7 @@
 #!/bin/sh
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # Simple script to show a manual power prompt for when you want to use
 # automated hardware testing with testimage.bbclass but you don't have a
 # web-enabled power strip or similar to do the power on/off/cycle.
diff --git a/poky/scripts/contrib/documentation-audit.sh b/poky/scripts/contrib/documentation-audit.sh
index 2144aac..1191f57 100755
--- a/poky/scripts/contrib/documentation-audit.sh
+++ b/poky/scripts/contrib/documentation-audit.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # Perform an audit of which packages provide documentation and which
 # are missing -doc packages.
 #
@@ -7,7 +9,6 @@
 # this script after source'ing the build environment script, so you're
 # running it from build/ directory.
 #
-# Maintainer: Scott Garman <scott.a.garman@intel.com>
 
 REPORT_DOC_SIMPLE="documentation_exists.txt"
 REPORT_DOC_DETAIL="documentation_exists_detail.txt"
diff --git a/poky/scripts/contrib/graph-tool b/poky/scripts/contrib/graph-tool
index 1df5b8c..6d2e68b 100755
--- a/poky/scripts/contrib/graph-tool
+++ b/poky/scripts/contrib/graph-tool
@@ -7,18 +7,7 @@
 #
 # Copyright 2013 Intel Corporation
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along
-# with this program; if not, write to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+# SPDX-License-Identifier: GPL-2.0-only
 #
 
 import sys
diff --git a/poky/scripts/contrib/list-packageconfig-flags.py b/poky/scripts/contrib/list-packageconfig-flags.py
index 7ce7186..b1d6c85 100755
--- a/poky/scripts/contrib/list-packageconfig-flags.py
+++ b/poky/scripts/contrib/list-packageconfig-flags.py
@@ -1,21 +1,10 @@
 #!/usr/bin/env python3
 
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation.
-#
 # Copyright (C) 2013 Wind River Systems, Inc.
 # Copyright (C) 2014 Intel Corporation
 #
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
 # - list available recipes which have PACKAGECONFIG flags
 # - list available PACKAGECONFIG flags and all affected recipes
 # - list all recipes and PACKAGECONFIG information
diff --git a/poky/scripts/contrib/oe-build-perf-report-email.py b/poky/scripts/contrib/oe-build-perf-report-email.py
index 913847b..de3862c 100755
--- a/poky/scripts/contrib/oe-build-perf-report-email.py
+++ b/poky/scripts/contrib/oe-build-perf-report-email.py
@@ -4,15 +4,9 @@
 #
 # Copyright (c) 2017, Intel Corporation.
 #
-# This program is free software; you can redistribute it and/or modify it
-# under the terms and conditions of the GNU General Public License,
-# version 2, as published by the Free Software Foundation.
+# SPDX-License-Identifier: GPL-2.0-only
 #
-# This program is distributed in the hope it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
-# more details.
-#
+
 import argparse
 import base64
 import logging
diff --git a/poky/scripts/contrib/patchreview.py b/poky/scripts/contrib/patchreview.py
index 0721665..62c509f 100755
--- a/poky/scripts/contrib/patchreview.py
+++ b/poky/scripts/contrib/patchreview.py
@@ -1,4 +1,7 @@
 #! /usr/bin/env python3
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 
 # TODO
 # - option to just list all broken files
diff --git a/poky/scripts/contrib/patchtest.sh b/poky/scripts/contrib/patchtest.sh
index 7fe5666..b1e1ea3 100755
--- a/poky/scripts/contrib/patchtest.sh
+++ b/poky/scripts/contrib/patchtest.sh
@@ -1,26 +1,12 @@
 #!/bin/bash
-# ex:ts=4:sw=4:sts=4:et
-# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
 #
 # patchtest: Run patchtest on commits starting at master
 #
 # Copyright (c) 2017, Intel Corporation.
-# All rights reserved.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
+# SPDX-License-Identifier: GPL-2.0-or-later
 #
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-#
+
 set -o errexit
 
 # Default values
diff --git a/poky/scripts/contrib/serdevtry b/poky/scripts/contrib/serdevtry
index 74bd7b7..9144730 100755
--- a/poky/scripts/contrib/serdevtry
+++ b/poky/scripts/contrib/serdevtry
@@ -2,7 +2,8 @@
 
 # Copyright (C) 2014 Intel Corporation
 #
-# Released under the MIT license (see COPYING.MIT)
+# SPDX-License-Identifier: MIT
+#
 
 if [ "$1" = "" -o "$1" = "--help" ] ; then
     echo "Usage: $0 <serial terminal command>"
diff --git a/poky/scripts/contrib/test_build_time.sh b/poky/scripts/contrib/test_build_time.sh
index 9e5725a..23f238a 100755
--- a/poky/scripts/contrib/test_build_time.sh
+++ b/poky/scripts/contrib/test_build_time.sh
@@ -3,22 +3,8 @@
 # Build performance regression test script
 #
 # Copyright 2011 Intel Corporation
-# All rights reserved.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-#
+# SPDX-License-Identifier: GPL-2.0-or-later
 #
 # DESCRIPTION
 # This script is intended to be used in conjunction with "git bisect run"
diff --git a/poky/scripts/contrib/test_build_time_worker.sh b/poky/scripts/contrib/test_build_time_worker.sh
index 8e20a9e..478e8b0 100755
--- a/poky/scripts/contrib/test_build_time_worker.sh
+++ b/poky/scripts/contrib/test_build_time_worker.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
-
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This is an example script to be used in conjunction with test_build_time.sh
 
 if [ "$TEST_BUILDDIR" = "" ] ; then
diff --git a/poky/scripts/contrib/uncovered b/poky/scripts/contrib/uncovered
index a8399ad..f16128c 100755
--- a/poky/scripts/contrib/uncovered
+++ b/poky/scripts/contrib/uncovered
@@ -1,23 +1,10 @@
 #!/bin/bash -eur
-# ex:ts=4:sw=4:sts=4:et
-# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
 #
 # Find python modules uncovered by oe-seltest
 #
 # Copyright (c) 2016, Intel Corporation
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along
-# with this program; if not, write to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Author: Ed Bartosh <ed.bartosh@linux.intel.com>
 #
diff --git a/poky/scripts/contrib/verify-homepage.py b/poky/scripts/contrib/verify-homepage.py
index cc6e797..7bffa78 100755
--- a/poky/scripts/contrib/verify-homepage.py
+++ b/poky/scripts/contrib/verify-homepage.py
@@ -1,5 +1,7 @@
 #!/usr/bin/env python3
-
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This script can be used to verify HOMEPAGE values for all recipes in
 # the current configuration.
 # The result is influenced by network environment, since the timeout of connect url is 5 seconds as default.