diff --git a/makefiles/lint/groovy.mk b/makefiles/lint/groovy.mk
new file mode 100644
index 0000000..6baf70c
--- /dev/null
+++ b/makefiles/lint/groovy.mk
@@ -0,0 +1,51 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# -----------------------------------------------------------------------
+
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+
+groovy-check      := npm-groovy-lint
+
+groovy-check-args := $(null)
+# groovy-check-args += --loglevel info
+# groovy-check-args += --ignorepattern
+# groovy-check-args += --verbose
+
+##-------------------##
+##---]  TARGETS  [---##
+##-------------------##
+ifndef NO-LINT-GROOVY
+  lint : lint-groovy
+endif
+
+## -----------------------------------------------------------------------
+## Intent: Perform a lint check on command line script sources
+## -----------------------------------------------------------------------
+lint-groovy:
+	$(groovy-check) --version
+	@echo
+	$(HIDE)$(env-clean) find . -iname '*.groovy' -print0 \
+  | $(xargs-n1) $(groovy-check) $(groovy-check-args)
+
+## -----------------------------------------------------------------------
+## Intent: Display command help
+## -----------------------------------------------------------------------
+help-summary ::
+	@echo '  lint-groovy          Syntax check groovy sources'
+
+# [EOF]
diff --git a/makefiles/lint/groovy/README.md b/makefiles/lint/groovy/README.md
new file mode 100644
index 0000000..aa9b41a
--- /dev/null
+++ b/makefiles/lint/groovy/README.md
@@ -0,0 +1,13 @@
+# lint: groovy source
+
+# Invoke the linting tool
+% make lint-groovy
+
+# Alt checking: groovy interpreter
+
+Odd syntax errors can be detected by the groovy interpreter.
+
+% groovy path/to/{source}.groovy
+
+jjb/ pipeline scripts will eventually due to syntax problems but groovy can
+still detect problems like mismatched quotes, invalid op tokens, etc.
diff --git a/makefiles/lint/groovy/urls b/makefiles/lint/groovy/urls
new file mode 100644
index 0000000..aa5c5eb
--- /dev/null
+++ b/makefiles/lint/groovy/urls
@@ -0,0 +1,8 @@
+# -*- makefile -*-
+
+# Config file and exclusions
+https://www.npmjs.com/package/npm-groovy-lint#Configuration
+
+https://github.com/nvuillam/npm-groovy-lint
+
+# [EOF]
diff --git a/makefiles/lint/yaml/yamllint.helm b/makefiles/lint/help.mk
similarity index 61%
rename from makefiles/lint/yaml/yamllint.helm
rename to makefiles/lint/help.mk
index 6c7787b..24a5aa1 100644
--- a/makefiles/lint/yaml/yamllint.helm
+++ b/makefiles/lint/help.mk
@@ -1,6 +1,6 @@
 # -*- makefile -*-
 # -----------------------------------------------------------------------
-# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# Copyright 2021-2023 Open Networking Foundation (ONF) and the ONF Contributors
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,20 +13,19 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-#
-# SPDX-FileCopyrightText: 2022 Open Networking Foundation (ONF) and the ONF Contributors
-# SPDX-License-Identifier: Apache-2.0
 # -----------------------------------------------------------------------
----
-# yamllint.conf
 
-extends: default
+help ::
 
-rules:
-  empty-lines:
-    max-end: 1
-  line-length:
-    max: 120
-  braces:
-    min-spaces-inside: 0
-    max-spaces-inside: 1
+# -----------------------------------------------------------------------
+# -----------------------------------------------------------------------
+help-summary ::
+	@echo '  help-lint           Display lint target help'
+
+help-simple :: help-lint
+help-lint  :
+	@echo
+	@echo "[LINT]"
+	@echo '  help-lint           Display lint target help'
+
+# [EOF]
diff --git a/makefiles/lint/include.mk b/makefiles/lint/include.mk
index 2a2d9ab..95059fe 100644
--- a/makefiles/lint/include.mk
+++ b/makefiles/lint/include.mk
@@ -2,6 +2,9 @@
 # -----------------------------------------------------------------------
 # Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
 # -----------------------------------------------------------------------
+# https://gerrit.opencord.org/plugins/gitiles/onf-make
+# ONF.makefile.version = 1.1
+# -----------------------------------------------------------------------
 
 $(if $(DEBUG),$(warning ENTER))
 
@@ -9,15 +12,16 @@
 	@echo
 	@echo "[LINT]"
 
-include $(ONF_MAKE)/lint/makefile.mk
-include $(ONF_MAKE)/lint/python.mk
-include $(ONF_MAKE)/lint/shell.mk
+include $(ONF_MAKEDIR)/lint/groovy.mk
+include $(ONF_MAKEDIR)/lint/jjb.mk
+include $(ONF_MAKEDIR)/lint/json.mk
+include $(ONF_MAKEDIR)/lint/license/include.mk
+include $(ONF_MAKEDIR)/lint/makefile.mk
+include $(ONF_MAKEDIR)/lint/python.mk
+include $(ONF_MAKEDIR)/lint/shell.mk
+include $(ONF_MAKEDIR)/lint/yaml.mk
 
-ifdef YAML_FILES
-  include $(ONF_MAKE)/lint/yaml/python.mk
-else
-  include $(ONF_MAKE)/lint/yaml/yamllint.mk
-endif
+include $(ONF_MAKEDIR)/lint/help.mk
 
 $(if $(DEBUG),$(warning LEAVE))
 
diff --git a/makefiles/lint/jjb.mk b/makefiles/lint/jjb.mk
new file mode 100644
index 0000000..ccfa073
--- /dev/null
+++ b/makefiles/lint/jjb.mk
@@ -0,0 +1,60 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2023 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# -----------------------------------------------------------------------
+
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+.PHONY: lint-venv
+
+##-------------------##
+##---]  TARGETS  [---##
+##-------------------##
+ifndef NO-LINT-JJB
+  lint : lint-jjb
+endif
+
+## -----------------------------------------------------------------------
+## Intent: Construct command line for linting jenkins-job-builder config
+## -----------------------------------------------------------------------
+
+ifdef DEBUG
+  lint-jjb-args += --log_level DEBUG#         # verbosity: high
+else
+  lint-jjb-args += --log_level INFO#          # verbosity: default
+endif
+lint-jjb-args += --ignore-cache
+lint-jjb-args += test#                        # command action
+lint-jjb-args += -o archives/job-configs#     # Generated jobs written here
+lint-jjb-args += --recursive
+lint-jjb-args += --config-xml#                # JJB v3.0 write to OUTPUT/jobname/config.xml
+lint-jjb-args += jjb/#                        # JJB config sources (input)
+
+lint-jjb-deps := $(null)
+lint-jjb-deps += $(venv-activate-script) 
+lint-jjb-deps += checkout-ci-management-sub-modules
+lint-jjb: $(lint-jjb-deps)
+	$(activate) && { jenkins-jobs $(lint-jjb-args); }
+
+## -----------------------------------------------------------------------
+## -----------------------------------------------------------------------
+help ::
+	@echo '  lint-jjb               Validate jjb job generation'
+ifdef VERBOSE
+	@echo '    DEBUG=1                lint-jjb --log_level=DEBUG'
+endif
+
+# [EOF]
diff --git a/makefiles/lint/json.mk b/makefiles/lint/json.mk
new file mode 100644
index 0000000..1deeaba
--- /dev/null
+++ b/makefiles/lint/json.mk
@@ -0,0 +1,92 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2017-2023 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License")
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# -----------------------------------------------------------------------
+
+$(if $(DEBUG),$(warning ENTER))
+
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+.PHONY: lint-json lint-json-all lint-json-modified
+
+have-json-files := $(if $(strip $(JSON_FILES)),true)
+JSON_FILES      ?= $(error JSON_FILES= required)
+
+## -----------------------------------------------------------------------
+## Intent: Use the json command to perform syntax checking.
+##   o If UNSTABLE=1 syntax check all sources
+##   o else only check sources modified by the developer.
+## Usage:
+##   % make lint UNSTABLE=1
+##   % make lint-json-all
+## -----------------------------------------------------------------------
+ifndef NO-LINT-JSON
+  lint-json-mode := $(if $(have-json-files),modified,all)
+  lint : lint-json-$(lint-json-mode)
+endif# NO-LINT-JSON
+
+## -----------------------------------------------------------------------
+## Intent: exhaustive json syntax checking
+## -----------------------------------------------------------------------
+json-find-args := $(null)
+json-find-args += -name '$(venv-name)'
+lint-json-all:	
+	$(HIDE)$(MAKE) --no-print-directory lint-json-install
+
+	$(activate)\
+ && find . \( $(json-find-args) \) -prune -o -name '*.json' -print0 \
+	| $(xargs-n1) python -m json.tool > /dev/null ;\
+
+## -----------------------------------------------------------------------
+## Intent: check deps for format and python3 cleanliness
+## Note:
+##   json --py3k option no longer supported
+## -----------------------------------------------------------------------
+lint-json-modified: $(venv-activate-script)
+	$(HIDE)$(MAKE) --no-print-directory lint-json-install
+
+	$(activate)\
+ && for jsonfile in $(JSON_FILES); do \
+        echo "Validating json file: $$jsonfile" ;\
+        python -m json.tool $$jsonfile > /dev/null ;\
+    done
+
+## -----------------------------------------------------------------------
+## Intent:
+## -----------------------------------------------------------------------
+.PHONY: lint-json-install
+lint-json-install: $(venv-activate-script)
+	@echo
+	@echo "** -----------------------------------------------------------------------"
+	@echo "** json syntax checking"
+	@echo "** -----------------------------------------------------------------------"
+#	$(activate) && pip install --upgrade json.tool
+#       $(activate) && python -m json.tool --version (?-howto-?)
+	@echo
+
+## -----------------------------------------------------------------------
+## Intent: Display command usage
+## -----------------------------------------------------------------------
+help::
+	@echo '  lint-json          Syntax check python using the json command'
+  ifdef VERBOSE
+	@echo '  lint-json-all       json checking: exhaustive'
+	@echo '  lint-json-modified  json checking: only modified'
+  endif
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]
diff --git a/makefiles/lint/license/include.mk b/makefiles/lint/license/include.mk
new file mode 100644
index 0000000..2b42049
--- /dev/null
+++ b/makefiles/lint/license/include.mk
@@ -0,0 +1,41 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# -----------------------------------------------------------------------
+
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+
+##-------------------##
+##---]  TARGETS  [---##
+##-------------------##
+ifndef NO-LINT-REUSE
+  lint : lint-license
+endif
+
+## -----------------------------------------------------------------------
+## Intent: Perform a lint check on makefile sources
+## -----------------------------------------------------------------------
+lint-license:
+	reuse --root . lint
+
+## -----------------------------------------------------------------------
+## Intent: Display command help
+## -----------------------------------------------------------------------
+help-summary ::
+	@echo '  lint-reuse              License syntax checking'
+
+# [EOF]
diff --git a/makefiles/lint/license/reuse.mk b/makefiles/lint/license/reuse.mk
new file mode 100644
index 0000000..5572bef
--- /dev/null
+++ b/makefiles/lint/license/reuse.mk
@@ -0,0 +1,41 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# -----------------------------------------------------------------------
+
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+
+##-------------------##
+##---]  TARGETS  [---##
+##-------------------##
+ifndef NO-LINT-REUSE
+  lint : lint-license
+endif
+
+## -----------------------------------------------------------------------
+## Intent: Perform a lint check on makefile sources
+## -----------------------------------------------------------------------
+lint-license:
+	reuse --root . lint
+
+## -----------------------------------------------------------------------
+## Intent: Display command help
+## -----------------------------------------------------------------------
+help-summary ::
+	@echo '  lint-reuse              License syntax checking"
+
+# [EOF]
diff --git a/makefiles/lint/makefile.mk b/makefiles/lint/makefile.mk
index 522d027..27206e0 100644
--- a/makefiles/lint/makefile.mk
+++ b/makefiles/lint/makefile.mk
@@ -1,6 +1,18 @@
 # -*- makefile -*-
 # -----------------------------------------------------------------------
-# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# Copyright 2017-2023 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # -----------------------------------------------------------------------
 
 ##-------------------##
@@ -14,7 +26,8 @@
 make-check-find += -o \( -iname makefile -o -name '*.mk' \)
 make-check-find += -type f -print0
 
-make-check    := $(env-clean) $(MAKE)
+make-check      := $(MAKE)
+
 make-check-args += --dry-run
 make-check-args += --keep-going
 make-check-args += --warn-undefined-variables
@@ -31,14 +44,22 @@
 endif
 
 ## -----------------------------------------------------------------------
+## Intent: Perform a lint check on makefile sources
 ## -----------------------------------------------------------------------
+lint-make-ignore += JSON_FILES=
+lint-make-ignore += YAML_FILES=
 lint-make:
+	@echo
+	@echo "** -----------------------------------------------------------------------"
+	@echo "** Makefile syntax checking"
+	@echo "** -----------------------------------------------------------------------"
 	$(HIDE)$(env-clean) $(make-check-find) \
-	    | $(xargs-n1-local) $(make-check) $(make-check-args)
+	    | $(xargs-n1-local) $(make-check) $(make-check-args) $(lint-make-ignore)
 
 ## -----------------------------------------------------------------------
+## Intent: Display command help
 ## -----------------------------------------------------------------------
-help ::
-	@echo '  lint-make                     Syntax check [Mm]akefile and *.mk'
+help-summary ::
+	@echo '  lint-make           Syntax check [Mm]akefile and *.mk'
 
 # [EOF]
diff --git a/makefiles/lint/python.mk b/makefiles/lint/python.mk
index 9252657..d3fe4fd 100644
--- a/makefiles/lint/python.mk
+++ b/makefiles/lint/python.mk
@@ -1,6 +1,18 @@
 # -*- makefile -*-
 # -----------------------------------------------------------------------
-# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# Copyright 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # -----------------------------------------------------------------------
 
 ##-------------------##
@@ -26,14 +38,16 @@
 endif
 
 ## -----------------------------------------------------------------------
+## Intent: Perform a lint check on makefile sources
 ## -----------------------------------------------------------------------
 lint-python:
 	$(HIDE)$(env-clean) $(python-check-find) \
 	    | $(xargs-n1) $(python-check) $(python-check-args)
 
 ## -----------------------------------------------------------------------
+## Intent: Display command help
 ## -----------------------------------------------------------------------
-help ::
-	@echo '  lint-python                   Syntax check python sources'
+help-summary ::
+	@echo '  lint-python         Syntax check python sources (*.py)'
 
 # [EOF]
diff --git a/makefiles/lint/robot.mk b/makefiles/lint/robot.mk
new file mode 100644
index 0000000..f33c4ba
--- /dev/null
+++ b/makefiles/lint/robot.mk
@@ -0,0 +1,43 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2017-2023 Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# -----------------------------------------------------------------------
+
+ROBOT_FILES ?= $(error ROBOT_FILES= is required)
+
+LINT_ARGS ?= --verbose --configure LineTooLong:130 -e LineTooLong \
+             --configure TooManyTestSteps:65 -e TooManyTestSteps \
+             --configure TooManyTestCases:50 -e TooManyTestCases \
+             --configure TooFewTestSteps:1 \
+             --configure TooFewKeywordSteps:1 \
+             --configure FileTooLong:2000 -e FileTooLong \
+             -e TrailingWhitespace
+
+
+.PHONY: lint-robot
+
+ifndef NO-LINT-ROBOT
+  lint : lint-robot
+endif
+
+lint-robot: vst_venv
+	source ./$</bin/activate \
+	    ; set -u \
+	    ; rflint $(LINT_ARGS) $(ROBOT_FILES)
+
+help::
+	@echo "  lint-robot           Syntax check robot sources using rflint"
+
+# [EOF]
diff --git a/makefiles/lint/shell.mk b/makefiles/lint/shell.mk
index cadc084..704038c 100644
--- a/makefiles/lint/shell.mk
+++ b/makefiles/lint/shell.mk
@@ -1,6 +1,21 @@
 # -*- makefile -*-
 # -----------------------------------------------------------------------
-# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# Copyright 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# -----------------------------------------------------------------------
+# https://gerrit.opencord.org/plugins/gitiles/onf-make
+# ONF.makefile.version = 1.0
 # -----------------------------------------------------------------------
 
 ##-------------------##
@@ -18,7 +33,8 @@
 # shell-check    := $(env-clean) pylint
 shell-check      := shellcheck
 
-shell-check-args += -a
+shell-check-args += --check-sourced
+shell-check-args += --external-sources
 
 ##-------------------##
 ##---]  TARGETS  [---##
@@ -28,6 +44,7 @@
 endif
 
 ## -----------------------------------------------------------------------
+## Intent: Perform a lint check on command line script sources
 ## -----------------------------------------------------------------------
 lint-shell:
 	$(shell-check) -V
@@ -36,8 +53,13 @@
 	    | $(xargs-n1) $(shell-check) $(shell-check-args)
 
 ## -----------------------------------------------------------------------
+## Intent: Display command help
 ## -----------------------------------------------------------------------
-help ::
-	@echo '  lint-shell                    Syntax check shell sources'
+help-summary ::
+	@echo '  lint-shell          Syntax check shell sources'
+
+# [SEE ALSO]
+# -----------------------------------------------------------------------
+#   o https://www.shellcheck.net/wiki/Directive
 
 # [EOF]
diff --git a/makefiles/lint/urls b/makefiles/lint/urls
new file mode 100644
index 0000000..5694a1b
--- /dev/null
+++ b/makefiles/lint/urls
@@ -0,0 +1,5 @@
+# -*- makefile -*-
+
+https://www.shellcheck.net/wiki/Directive
+
+# [EOF]
\ No newline at end of file
diff --git a/makefiles/lint/yaml.mk b/makefiles/lint/yaml.mk
new file mode 100644
index 0000000..ab5b9d6
--- /dev/null
+++ b/makefiles/lint/yaml.mk
@@ -0,0 +1,84 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2017-2023 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License")
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# -----------------------------------------------------------------------
+
+$(if $(DEBUG),$(warning ENTER))
+
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+.PHONY: lint-yaml lint-yaml-all lint-yaml-modified
+
+have-yaml-files := $(if $(strip $(YAML_FILES)),true)
+YAML_FILES      ?= $(error YAML_FILES= is required)
+
+## -----------------------------------------------------------------------
+## Intent: Use the yaml command to perform syntax checking.
+##   o If UNSTABLE=1 syntax check all sources
+##   o else only check sources modified by the developer.
+## Usage:
+##   % make lint UNSTABLE=1
+##   % make lint-yaml-all
+## -----------------------------------------------------------------------
+lint-yaml-mode := $(if $(have-yaml-files),modified,all)
+lint-yaml : lint-yaml-$(lint-yaml-mode)
+
+ifndef NO-LINT-YAML
+  lint : lint-yaml#     # Enable as a default lint target
+endif# NO-LINT-YAML
+
+## -----------------------------------------------------------------------
+## Intent: exhaustive yaml syntax checking
+## -----------------------------------------------------------------------
+lint-yaml-all:
+	$(HIDE)$(MAKE) --no-print-directory lint-yaml-install
+
+	find . \( -iname '*.yaml' -o -iname '*.yml' \) -print0 \
+	    | $(xargs-n1-clean) yamllint --strict
+
+## -----------------------------------------------------------------------
+## Intent: check deps for format and python3 cleanliness
+## Note:
+##   yaml --py3k option no longer supported
+## -----------------------------------------------------------------------
+lint-yaml-modified:
+	$(HIDE)$(MAKE) --no-print-directory lint-yaml-install
+	yamllint -s $(YAML_FILES)
+
+## -----------------------------------------------------------------------
+## Intent:
+## -----------------------------------------------------------------------
+lint-yaml-install:
+	@echo
+	@echo "** -----------------------------------------------------------------------"
+	@echo "** yaml syntax checking"
+	@echo "** -----------------------------------------------------------------------"
+	yamllint --version
+	@echo
+
+## -----------------------------------------------------------------------
+## Intent: Display command usage
+## -----------------------------------------------------------------------
+help::
+	@echo '  lint-yaml          Syntax check python using the yaml command'
+  ifdef VERBOSE
+	@echo '  lint-yaml-all       yaml checking: exhaustive'
+	@echo '  lint-yaml-modified  yaml checking: only locally modified'
+  endif
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]
diff --git a/makefiles/lint/yaml/.yamllint b/makefiles/lint/yaml/.yamllint
deleted file mode 100644
index 6a4fc1e..0000000
--- a/makefiles/lint/yaml/.yamllint
+++ /dev/null
@@ -1,45 +0,0 @@
-# -*- makefile -*-
-# -----------------------------------------------------------------------
-# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# SPDX-FileCopyrightText: 2022 Open Networking Foundation (ONF) and the ONF Contributors
-# SPDX-License-Identifier: Apache-2.0
-# -----------------------------------------------------------------------
----
-
-yaml-files:
-  - '*.yaml'
-  - '*.yml'
-  - '.yamllint'
-
-rules:
-  document-start: disable
-  line-length:
-    max: 160
-
-# -----------------------------------------------------------------------
-# .. seealso: https://gerrit.opencord.org/plugins/gitiles/helm-repo-tools/+/refs/heads/master/yamllint.conf
-# -----------------------------------------------------------------------
-#
-# extends: default
-#
-#rules:
-#  empty-lines:
-#    max-end: 1
-#  line-length:
-#    max: 120
-#  braces:
-#    min-spaces-inside: 0
-#    max-spaces-inside: 1
diff --git a/makefiles/lint/yaml/python.mk b/makefiles/lint/yaml/python.mk
deleted file mode 100644
index 868d9b7..0000000
--- a/makefiles/lint/yaml/python.mk
+++ /dev/null
@@ -1,41 +0,0 @@
-# -*- makefile -*-
-# -----------------------------------------------------------------------
-# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# SPDX-FileCopyrightText: 2022 Open Networking Foundation (ONF) and the ONF Contributors
-# SPDX-License-Identifier: Apache-2.0
-# -----------------------------------------------------------------------
-
-YAML_FILES ?= $(error YAML_FILES= is required)
-
-lint-yaml-dep = $(addsuffix ^lint-yaml,$(YAML_FILES))
-lint-yaml-src = $(firstword $(subst ^,$(space),$(1)))
-
-##-------------------##
-##---]  TARGETS  [---##
-##-------------------##
-.PHONY : lint-yaml
-lint   : lint-yaml
-
-lint-yaml: $(venv-activate)
-lint-yaml: $(lint-yaml-dep)
-
-$(lint-yaml-dep):
-	$(vst-env) && yamllint -s $(call lint-yaml-src,$@)
-
-help::
-	@echo "  lint-yaml            Syntax check yaml sources"
-
-# [EOF]
diff --git a/makefiles/lint/yaml/todo b/makefiles/lint/yaml/todo
deleted file mode 100644
index 8a9367b..0000000
--- a/makefiles/lint/yaml/todo
+++ /dev/null
@@ -1,39 +0,0 @@
-# -*- makefile -*-
-# -----------------------------------------------------------------------
-# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
-# -----------------------------------------------------------------------
-
-##-------------------##
-##---]  GLOBALS  [---##
-##-------------------##
-env-clean = /usr/bin/env --ignore-environment
-xargs-n1      := xargs -0 -t -n1 --no-run-if-empty
-
-yamllint      := $(env-clean) $(YAMLLINT)
-yamllint-args := -c .yamllint
-
-##-------------------##
-##---]  TARGETS  [---##
-##-------------------##
-lint : lint-yaml
-
-## -----------------------------------------------------------------------
-## -----------------------------------------------------------------------
-lint-yaml:
-	$(HIDE)$(env-clean) find . -name '*.yaml' -type f -print0 \
-	    | $(xargs-n1) $(yamllint) $(yamllint-args)
-
-## -----------------------------------------------------------------------
-## -----------------------------------------------------------------------
-help:
-	@echo
-	@echo "USAGE: $(MAKE)"
-	@echo "  lint        perform syntax checks on source"
-	@echo "  test        perform syntax checks on source"
-	@echo "  pre-check   Verify tools and deps are available for testing"
-	@echo
-	@echo "[LINT]"
-	@echo "  lint-json   Syntax check .json sources"
-	@echo "  lint-yaml   Syntax check .yaml sources"
-	@echo
-# [EOF]
diff --git a/makefiles/lint/yaml/urls b/makefiles/lint/yaml/urls
deleted file mode 100644
index 8747658..0000000
--- a/makefiles/lint/yaml/urls
+++ /dev/null
@@ -1,5 +0,0 @@
-# -*- makefile -*-
-
-https://yamllint.readthedocs.io/en/stable/configuration.html
-
-# [EOF]
\ No newline at end of file
diff --git a/makefiles/lint/yaml/yamllint.mk b/makefiles/lint/yaml/yamllint.mk
deleted file mode 100644
index 9556a45..0000000
--- a/makefiles/lint/yaml/yamllint.mk
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- makefile -*-
-# -----------------------------------------------------------------------
-# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# SPDX-FileCopyrightText: 2022 Open Networking Foundation (ONF) and the ONF Contributors
-# SPDX-License-Identifier: Apache-2.0
-# -----------------------------------------------------------------------
-
-$(if $(DEBUG),$(warning ENTER))
-
-yamllint      := $(env-clean) yamllint
-
-## -------------------------------
-## Add requirement(s) for checking
-## -------------------------------
-# yamllint-cfg := .yamllint
-yamllint-cfg := yamllint.helm
-yamllint-conf = $(wildcard $(yamllint-cfg) $(MAKEDIR)/lint/yaml/$(yamllint-cfg))
-yamllint-args += $(addprefix --config-file$(space),$(yamllint-conf))
-
-# yamllint-args := --no-warnings
-# yamllint-args := --strict
-
-yamllint-find := find . -name 'vendor' -prune
-yamllint-find += -o -name '*.yaml' -type f
-yamllint-find += -print0
-
-## -----------------------------------------------------------------------
-## -----------------------------------------------------------------------
-lint lint-yaml:
-	$(HIDE)$(env-clean) $(yamllint-find) \
-	    | xargs -0 --no-run-if-empty -t -n1 $(yamllint) $(yamllint-args)
-
-## -----------------------------------------------------------------------
-## -----------------------------------------------------------------------
-help::
-	@echo "  lint-yaml                     Syntax check yaml sources"
-
-$(if $(DEBUG),$(warning ENTER))
-
-# [EOF]