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%
copy from makefiles/lint/yaml/yamllint.helm
copy 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..e831985 100644
--- a/makefiles/lint/include.mk
+++ b/makefiles/lint/include.mk
@@ -1,23 +1,52 @@
 # -*- 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.
+#
+# SPDX-FileCopyrightText: 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
+# https://gerrit.opencord.org/plugins/gitiles/onf-make
+# ONF.makefile.version = 1.1
 # -----------------------------------------------------------------------
 
 $(if $(DEBUG),$(warning ENTER))
 
+## -----------------------------------------------------------------------
+## -----------------------------------------------------------------------
 help ::
 	@echo
 	@echo "[LINT]"
 
-include $(ONF_MAKE)/lint/makefile.mk
-include $(ONF_MAKE)/lint/python.mk
-include $(ONF_MAKE)/lint/shell.mk
+## moved to config.mk
+## Disable python linting in bulk ?
+# ifdef NO-LINT-PYTHON
+#   NO-LINT-FLAKE8 := true
+#   NO-LINT-PYLINT := true
+# endif
 
-ifdef YAML_FILES
-  include $(ONF_MAKE)/lint/yaml/python.mk
-else
-  include $(ONF_MAKE)/lint/yaml/yamllint.mk
-endif
+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/include.mk
+include $(ONF_MAKEDIR)/lint/shellcheck/include.mk
+include $(ONF_MAKEDIR)/lint/tox/include.mk
+include $(ONF_MAKEDIR)/lint/yaml/include.mk
+
+include $(ONF_MAKEDIR)/lint/help.mk
 
 $(if $(DEBUG),$(warning LEAVE))
 
diff --git a/makefiles/lint/include.mk.bk b/makefiles/lint/include.mk.bk
new file mode 100644
index 0000000..2a2d9ab
--- /dev/null
+++ b/makefiles/lint/include.mk.bk
@@ -0,0 +1,24 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# -----------------------------------------------------------------------
+
+$(if $(DEBUG),$(warning ENTER))
+
+help ::
+	@echo
+	@echo "[LINT]"
+
+include $(ONF_MAKE)/lint/makefile.mk
+include $(ONF_MAKE)/lint/python.mk
+include $(ONF_MAKE)/lint/shell.mk
+
+ifdef YAML_FILES
+  include $(ONF_MAKE)/lint/yaml/python.mk
+else
+  include $(ONF_MAKE)/lint/yaml/yamllint.mk
+endif
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]
diff --git a/makefiles/lint/jjb.mk b/makefiles/lint/jjb.mk
new file mode 100644
index 0000000..5f7e7c8
--- /dev/null
+++ b/makefiles/lint/jjb.mk
@@ -0,0 +1,67 @@
+# -*- 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
+
+# [ERRORS]
+# -----------------------------------------------------------------------
+# make: *** No rule to make target 'checkout-ci-management-sub-modules', needed by 'lint-jjb'.  Stop.
+#   o jjb lint checking is only valid for ci-management repos.
+#   o Enable (NO_LINT_JJB := true) in ${repo-root}/config.mk
+# -----------------------------------------------------------------------
+
+# [EOF]
diff --git a/makefiles/lint/json.mk b/makefiles/lint/json.mk
new file mode 100644
index 0000000..1deeaba
--- /dev/null
+++ b/makefiles/lint/json.mk
@@ -0,0 +1,92 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2017-2023 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License")
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# -----------------------------------------------------------------------
+
+$(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
deleted file mode 100644
index 9252657..0000000
--- a/makefiles/lint/python.mk
+++ /dev/null
@@ -1,39 +0,0 @@
-# -*- makefile -*-
-# -----------------------------------------------------------------------
-# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
-# -----------------------------------------------------------------------
-
-##-------------------##
-##---]  GLOBALS  [---##
-##-------------------##
-
-# Gather sources to check
-# TODO: implement deps, only check modified files
-python-check-find := find . -name '*venv*' -prune\
-  -o \( -name '*.py' \)\
-  -type f -print0
-
-# python-check    := $(env-clean) pylint
-python-check    := pylint
-
-# python-check-args += --dry-run
-
-##-------------------##
-##---]  TARGETS  [---##
-##-------------------##
-ifndef NO-LINT-PYTHON
-  lint : lint-python
-endif
-
-## -----------------------------------------------------------------------
-## -----------------------------------------------------------------------
-lint-python:
-	$(HIDE)$(env-clean) $(python-check-find) \
-	    | $(xargs-n1) $(python-check) $(python-check-args)
-
-## -----------------------------------------------------------------------
-## -----------------------------------------------------------------------
-help ::
-	@echo '  lint-python                   Syntax check python sources'
-
-# [EOF]
diff --git a/makefiles/lint/python/find_utils.mk b/makefiles/lint/python/find_utils.mk
new file mode 100644
index 0000000..7ab4c4f
--- /dev/null
+++ b/makefiles/lint/python/find_utils.mk
@@ -0,0 +1,32 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Intent:
+#   o Construct a find command able to gather python files with filtering.
+#   o Used by library makefiles flake8.mk and pylint.mk for iteration.
+# -----------------------------------------------------------------------
+
+## -----------------------------------------------------------------------
+## Intent: Construct a string for invoking find \( excl-pattern \) -prune
+# -----------------------------------------------------------------------
+gen-python-find-excl = \
+  $(strip \
+	-name '__ignored__' \
+	$(foreach dir,$($(1)),-o -name $(dir)) \
+  )
+
+## -----------------------------------------------------------------------
+## Intent: Construct a find command to gather a list of python files
+##         with exclusions.
+## -----------------------------------------------------------------------
+## Usage:
+#	$(activate) & $(call gen-python-find-cmd) | $(args-n1) pylint
+## -----------------------------------------------------------------------
+gen-python-find-cmd = \
+  $(strip \
+    find . \
+      \( $(call gen-python-find-excl,onf-excl-dirs) \) -prune \
+      -o -name '*.py' \
+      -print0 \
+  )
+
+# [EOF]
diff --git a/makefiles/lint/python/flake8.mk b/makefiles/lint/python/flake8.mk
new file mode 100644
index 0000000..decdfe3
--- /dev/null
+++ b/makefiles/lint/python/flake8.mk
@@ -0,0 +1,89 @@
+# -*- 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-flake8 lint-flake8-all lint-flake8-modified
+
+PYTHON_FILES      ?= $(error PYTHON_FILES= required)
+
+## -----------------------------------------------------------------------
+## Intent: Use the flake8 command to perform syntax checking.
+## Usage:
+##   % make lint
+##   % make lint-flake8-all
+## -----------------------------------------------------------------------
+ifndef NO-LINT-FLAKE8
+  lint-flake8-mode := $(if $(have-python-files),modified,all)
+  lint        : lint-flake8
+  lint-flake8 : lint-flake8-$(lint-flake8-mode)
+endif# NO-LINT-FLAKE8
+
+## -----------------------------------------------------------------------
+## Intent: exhaustive flake8 syntax checking
+## -----------------------------------------------------------------------
+lint-flake8-all: $(venv-activate-script)
+	$(call banner-enter,Target $@)
+	$(HIDE)$(MAKE) --no-print-directory lint-flake8-install
+
+	$(activate) && $(call gen-python-find-cmd) \
+	    | $(xargs-n1) flake8 --max-line-length=99 --count
+	$(call banner-leave,Target $@)
+
+## -----------------------------------------------------------------------
+## Intent: check deps for format and python3 cleanliness
+## Note:
+##   pylint --py3k option no longer supported
+## -----------------------------------------------------------------------
+lint-flake8-modified: $(venv-activate-script)
+	$(call banner-enter,Target $@)
+	$(HIDE)$(MAKE) --no-print-directory lint-flake8-install
+
+	$(activate) && flake8 --max-line-length=99 --count $(PYTHON_FILES)
+	$(call banner-leave,Target $@)
+
+## -----------------------------------------------------------------------
+## Intent: Install the flake8 tool for checking
+## Todo:
+##   o Update to use file dependencies VS generic target always called
+## -----------------------------------------------------------------------
+.PHONY: lint-flake8-install
+lint-flake8-install: $(venv-activate-script)
+	$(call banner-enter,Target $@)
+	$(activate) && pip install --upgrade flake8
+	$(activate) && flake8 --version
+	$(call banner-leave,Target $@)
+	@echo
+
+## -----------------------------------------------------------------------
+## Intent: Display command usage
+## -----------------------------------------------------------------------
+help::
+	@echo '  lint-flake8          Syntax check python using the flake8 command'
+  ifdef VERBOSE
+	@echo '  $(MAKE) lint-pylint PYTHON_FILES=...'
+	@echo '  lint-flake8-modified  flake8 checking: only modified'
+	@echo '  lint-flake8-all       flake8 checking: exhaustive'
+	@echo '  lint-flake8-install   Install the flake8 command'
+  endif
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]
diff --git a/makefiles/lint/yaml/yamllint.helm b/makefiles/lint/python/include.mk
similarity index 62%
copy from makefiles/lint/yaml/yamllint.helm
copy to makefiles/lint/python/include.mk
index 6c7787b..ce7d7af 100644
--- a/makefiles/lint/yaml/yamllint.helm
+++ b/makefiles/lint/python/include.mk
@@ -1,6 +1,6 @@
 # -*- 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.
@@ -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
+$(if $(DEBUG),$(warning ENTER))
 
-rules:
-  empty-lines:
-    max-end: 1
-  line-length:
-    max: 120
-  braces:
-    min-spaces-inside: 0
-    max-spaces-inside: 1
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+$(if $(UNSTABLE),$(eval lint-python-all := true))
+
+include $(ONF_MAKEDIR)/lint/python/find_utils.mk
+include $(ONF_MAKEDIR)/lint/python/flake8.mk
+include $(ONF_MAKEDIR)/lint/python/pylint.mk
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]
diff --git a/makefiles/lint/python/pylint.mk b/makefiles/lint/python/pylint.mk
new file mode 100644
index 0000000..489c347
--- /dev/null
+++ b/makefiles/lint/python/pylint.mk
@@ -0,0 +1,91 @@
+# -*- 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-pylint lint-pylint-all lint-pylint-modified
+
+PYTHON_FILES      ?= $(error PYTHON_FILES= required)
+
+## -----------------------------------------------------------------------
+## Intent: Use the pylint 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-pylint-all
+## -----------------------------------------------------------------------
+ifndef NO-LINT-PYLINT
+  lint-pylint-mode := $(if $(have-python-files),modified,all)
+  lint        : lint-pylint
+  lint-pylint : lint-pylint-$(lint-pylint-mode)
+endif# NO-LINT-PYLINT
+
+## -----------------------------------------------------------------------
+## Intent: exhaustive pylint syntax checking
+## -----------------------------------------------------------------------
+lint-pylint-all: $(venv-activate-script)
+	$(call banner-enter,Target $@)
+	$(MAKE) --no-print-directory lint-pylint-install
+
+	$(activate) && $(call gen-python-find-cmd) | $(xargs-n1) pylint
+	$(call banner-leave,Target $@)
+
+## -----------------------------------------------------------------------
+## Intent: check deps for format and python3 cleanliness
+## Note:
+##   pylint --py3k option no longer supported
+## -----------------------------------------------------------------------
+lint-pylint-modified: $(venv-activate-script)
+	$(call banner-enter,Target $@)
+	$(MAKE) --no-print-directory lint-pylint-install
+
+	$(activate) && pylint $(PYTHON_FILES)
+	$(call banner-leave,Target $@)
+
+## -----------------------------------------------------------------------
+## Intent: Install the pylint tool for checking
+## Todo:
+##   o Update to use file dependencies VS generic target always called
+## -----------------------------------------------------------------------
+.PHONY: lint-pylint-install
+lint-pylint-install: $(venv-activate-script)
+
+	$(call banner-enter,Target $@)
+	$(activate) && pip install --upgrade pylint
+	$(activate) && pylint --version
+	$(call banner-leave,Target $@)
+	@echo
+
+## -----------------------------------------------------------------------
+## Intent: Display command usage
+## -----------------------------------------------------------------------
+help::
+	@echo '  lint-pylint          Syntax check python using the pylint command'
+  ifdef VERBOSE
+	@echo '  $(MAKE) lint-pylint PYTHON_FILES=...'
+	@echo '  lint-pylint-modified  pylint checking: only modified'
+	@echo '  lint-pylint-all       pylint checking: exhaustive'
+	@echo '  lint-pylint-install   Install the pylint command'
+  endif
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [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
deleted file mode 100644
index cadc084..0000000
--- a/makefiles/lint/shell.mk
+++ /dev/null
@@ -1,43 +0,0 @@
-# -*- makefile -*-
-# -----------------------------------------------------------------------
-# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
-# -----------------------------------------------------------------------
-
-##-------------------##
-##---]  GLOBALS  [---##
-##-------------------##
-
-# Gather sources to check
-# TODO: implement deps, only check modified files
-shell-check-find := find .
-# vendor scripts but they really should be lintable
-shell-check-find += -name 'vendor' -prune
-shell-check-find += -o \( -name '*.sh' \)
-shell-check-find += -type f -print0
-
-# shell-check    := $(env-clean) pylint
-shell-check      := shellcheck
-
-shell-check-args += -a
-
-##-------------------##
-##---]  TARGETS  [---##
-##-------------------##
-ifndef NO-LINT-SHELL
-  lint : lint-shell
-endif
-
-## -----------------------------------------------------------------------
-## -----------------------------------------------------------------------
-lint-shell:
-	$(shell-check) -V
-	@echo
-	$(HIDE)$(env-clean) $(shell-check-find) \
-	    | $(xargs-n1) $(shell-check) $(shell-check-args)
-
-## -----------------------------------------------------------------------
-## -----------------------------------------------------------------------
-help ::
-	@echo '  lint-shell                    Syntax check shell sources'
-
-# [EOF]
diff --git a/makefiles/lint/shellcheck/find_utils.mk b/makefiles/lint/shellcheck/find_utils.mk
new file mode 100644
index 0000000..0ea4e5d
--- /dev/null
+++ b/makefiles/lint/shellcheck/find_utils.mk
@@ -0,0 +1,31 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Intent:
+#   o Construct a find command able to gather shell files for checking.
+# -----------------------------------------------------------------------
+
+## -----------------------------------------------------------------------
+## Intent: Construct a string for invoking find \( excl-pattern \) -prune
+# -----------------------------------------------------------------------
+gen-shellcheck-find-excl = \
+  $(strip \
+	-name '__ignored__' \
+	$(foreach dir,$($(1)),-o -name $(dir)) \
+  )
+
+## -----------------------------------------------------------------------
+## Intent: Construct a find command to gather a list of python files
+##         with exclusions.
+## -----------------------------------------------------------------------
+## Usage:
+#	$(activate) & $(call gen-python-find-cmd) | $(args-n1) pylint
+## -----------------------------------------------------------------------
+gen-shellcheck-find-cmd = \
+  $(strip \
+    find . \
+      \( $(call gen-shellcheck-find-excl,onf-excl-dirs) \) -prune \
+      -o \( -iname '*.sh' \) \
+      -print0 \
+  )
+
+# [EOF]
diff --git a/makefiles/lint/shellcheck/include.mk b/makefiles/lint/shellcheck/include.mk
new file mode 100644
index 0000000..2b8c6c6
--- /dev/null
+++ b/makefiles/lint/shellcheck/include.mk
@@ -0,0 +1,37 @@
+# -*- 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.
+# -----------------------------------------------------------------------
+
+ifndef mk-include--onf-lint-shellcheck # single-include guard macro
+
+$(if $(DEBUG),$(warning ENTER))
+
+##--------------------##
+##---]  INCLUDES  [---##
+##--------------------##
+# include $(ONF_MAKEDIR)/lint/shellcheck/help.mk
+include $(ONF_MAKEDIR)/lint/shellcheck/find_utils.mk
+
+# Standard lint-yaml targets
+include $(ONF_MAKEDIR)/lint/shellcheck/shellcheck.mk
+
+mk-include--onf-lint-shellcheck := true#        # Flag to inhibit re-including
+
+$(if $(DEBUG),$(warning LEAVE))
+
+endif # mk-include--onf-lint-shellcheck
+
+# [EOF]
diff --git a/makefiles/lint/shellcheck/shellcheck.mk b/makefiles/lint/shellcheck/shellcheck.mk
new file mode 100644
index 0000000..5c466e4
--- /dev/null
+++ b/makefiles/lint/shellcheck/shellcheck.mk
@@ -0,0 +1,68 @@
+# -*- 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.
+# -----------------------------------------------------------------------
+# https://gerrit.opencord.org/plugins/gitiles/onf-make
+# ONF.makefile.version = 1.0
+# -----------------------------------------------------------------------
+
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+
+shell-check    := $(env-clean) shellcheck
+
+shell-check-args += --check-sourced
+shell-check-args += --external-sources
+
+##-------------------##
+##---]  TARGETS  [---##
+##-------------------##
+ifndef NO-LINT-SHELLCHECK
+  lint : lint-shellcheck
+endif
+
+## -----------------------------------------------------------------------
+## Intent: Perform a lint check on command line script sources
+## -----------------------------------------------------------------------
+lint-shellcheck: # shellcheck-version
+
+	$(call banner-enter,Target $@)
+	$(call gen-shellcheck-find-cmd) \
+	    | $(xargs-cmd-clean) -I'{}' \
+	        bash -c "$(shell-check) $(shell-check-args) {}"
+	$(call banner-leave,Target $@)
+
+## -----------------------------------------------------------------------
+## Intent: Display yamllint command version string.
+##   Note: As a side effect, install yamllint by dependency
+## -----------------------------------------------------------------------
+.PHONY: shellcheck-cmd-version
+shellcheck-cmd-version :
+
+	@echo
+	$(shell-check) -V
+
+## -----------------------------------------------------------------------
+## Intent: Display command help
+## -----------------------------------------------------------------------
+help-summary ::
+	@echo '  lint-shellcheck          Syntax check shell sources'
+
+# [SEE ALSO]
+# -----------------------------------------------------------------------
+#   o https://www.shellcheck.net/wiki/Directive
+
+# [EOF]
diff --git a/makefiles/lint/yaml/yamllint.helm b/makefiles/lint/tox/include.mk
similarity index 69%
copy from makefiles/lint/yaml/yamllint.helm
copy to makefiles/lint/tox/include.mk
index 6c7787b..7d7cf3e 100644
--- a/makefiles/lint/yaml/yamllint.helm
+++ b/makefiles/lint/tox/include.mk
@@ -1,6 +1,6 @@
 # -*- 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.
@@ -14,19 +14,14 @@
 # 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-FileCopyrightText: 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
 # SPDX-License-Identifier: Apache-2.0
 # -----------------------------------------------------------------------
----
-# yamllint.conf
 
-extends: default
+$(if $(DEBUG),$(warning ENTER))
 
-rules:
-  empty-lines:
-    max-end: 1
-  line-length:
-    max: 120
-  braces:
-    min-spaces-inside: 0
-    max-spaces-inside: 1
+include $(ONF_MAKEDIR)/lint/tox/tox.mk
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]
diff --git a/makefiles/lint/tox/tox.mk b/makefiles/lint/tox/tox.mk
new file mode 100644
index 0000000..35cec00
--- /dev/null
+++ b/makefiles/lint/tox/tox.mk
@@ -0,0 +1,91 @@
+# -*- 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.
+#
+# SPDX-FileCopyrightText: 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
+
+$(if $(DEBUG),$(warning ENTER))
+
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+.PHONY: lint-tox lint-tox-all lint-tox-modified
+
+PYTHON_FILES      ?= $(error PYTHON_FILES= required)
+
+## -----------------------------------------------------------------------
+## Intent: Sanity check incoming JJB config changes.
+##   Todo: Depend on makefiles/lint/jjb.mk :: lint-jjb
+## -----------------------------------------------------------------------
+ifndef NO-LINT-TOX
+  lint-tox-mode := $(if $(have-python-files),modified,all)
+  lint     : lint-tox
+  lint-tox : lint-tox-$(lint-tox-mode)
+endif# NO-LINT-TOX
+
+## -----------------------------------------------------------------------
+## Intent: Invoke tox on all sources
+## -----------------------------------------------------------------------
+lint-tox-all: $(venv-activate-script)
+	$(MAKE) --no-print-directory lint-tox-install
+
+	$(activate) && tox -e py310
+
+## -----------------------------------------------------------------------
+## Intent: Invoke tox on modified sources (target is mainly for consistency)
+## -----------------------------------------------------------------------
+lint-tox-modified: $(venv-activate-script)
+	$(MAKE) --no-print-directory lint-tox-install
+
+	$(activate) && tox -e py310 $(PYTHON_FILES)
+
+## -----------------------------------------------------------------------
+## Intent: https://tox.wiki/en/4.6.4/installation.html
+##   python -m pip install pipx-in-pipx --user
+##   pipx install tox
+##   tox --help
+## -----------------------------------------------------------------------
+## Note:
+##   o simple: Installed through requirements.txt
+##   o This target can make usage on-demand.
+## -----------------------------------------------------------------------
+.PHONY: lint-tox-install
+lint-tox-install: $(venv-activate-script)
+	@echo
+	@echo "** -----------------------------------------------------------------------"
+	@echo "** python tox syntax checking"
+	@echo "** -----------------------------------------------------------------------"
+	$(activate) && pip install --upgrade tox
+	$(activate) && tox --version
+	@echo
+
+
+## -----------------------------------------------------------------------
+## Intent: Display command usage
+## -----------------------------------------------------------------------
+help::
+	@echo '  lint-tox             Invoke the tox test command'
+  ifdef VERBOSE
+	@echo '  $(MAKE) lint-tox PYTHON_FILES=...'
+	@echo '  lint-tox-modified  tox checking: only modified'
+	@echo '  lint-tox-all       tox checking: exhaustive'
+	@echo '  lint-tox-install     Install the tox command'
+  endif
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [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/.yamllint b/makefiles/lint/yaml/.yamllint
index 6a4fc1e..c42c6d5 100644
--- a/makefiles/lint/yaml/.yamllint
+++ b/makefiles/lint/yaml/.yamllint
@@ -1,6 +1,6 @@
 # -*- 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.
diff --git a/makefiles/lint/yaml/yamllint.helm b/makefiles/lint/yaml/byrepo/voltha-lib-go/include.mk
similarity index 66%
copy from makefiles/lint/yaml/yamllint.helm
copy to makefiles/lint/yaml/byrepo/voltha-lib-go/include.mk
index 6c7787b..6cbd0ea 100644
--- a/makefiles/lint/yaml/yamllint.helm
+++ b/makefiles/lint/yaml/byrepo/voltha-lib-go/include.mk
@@ -1,6 +1,6 @@
 # -*- makefile -*-
 # -----------------------------------------------------------------------
-# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# 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.
@@ -13,20 +13,15 @@
 # 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
+$(if $(DEBUG),$(warning ENTER))
 
-rules:
-  empty-lines:
-    max-end: 1
-  line-length:
-    max: 120
-  braces:
-    min-spaces-inside: 0
-    max-spaces-inside: 1
+##--------------------##
+##---]  INCLUDES  [---##
+##--------------------##
+include $(ONF_MAKEDIR)/lint/yaml/byrepo/$(--repo-name--)/yamllint.mk
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]
diff --git a/makefiles/lint/yaml/python.mk b/makefiles/lint/yaml/byrepo/voltha-lib-go/python.mk
similarity index 93%
rename from makefiles/lint/yaml/python.mk
rename to makefiles/lint/yaml/byrepo/voltha-lib-go/python.mk
index 868d9b7..cf0eef5 100644
--- a/makefiles/lint/yaml/python.mk
+++ b/makefiles/lint/yaml/byrepo/voltha-lib-go/python.mk
@@ -1,6 +1,6 @@
 # -*- 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.
diff --git a/makefiles/lint/yaml/byrepo/voltha-lib-go/repo b/makefiles/lint/yaml/byrepo/voltha-lib-go/repo
new file mode 100644
index 0000000..99e8451
--- /dev/null
+++ b/makefiles/lint/yaml/byrepo/voltha-lib-go/repo
@@ -0,0 +1 @@
+Source from voltha-lib-go
\ No newline at end of file
diff --git a/makefiles/lint/yaml/todo b/makefiles/lint/yaml/byrepo/voltha-lib-go/todo
similarity index 93%
rename from makefiles/lint/yaml/todo
rename to makefiles/lint/yaml/byrepo/voltha-lib-go/todo
index 8a9367b..8400c64 100644
--- a/makefiles/lint/yaml/todo
+++ b/makefiles/lint/yaml/byrepo/voltha-lib-go/todo
@@ -1,6 +1,6 @@
 # -*- makefile -*-
 # -----------------------------------------------------------------------
-# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# Copyright 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
 # -----------------------------------------------------------------------
 
 ##-------------------##
diff --git a/makefiles/lint/yaml/urls b/makefiles/lint/yaml/byrepo/voltha-lib-go/urls
similarity index 100%
rename from makefiles/lint/yaml/urls
rename to makefiles/lint/yaml/byrepo/voltha-lib-go/urls
diff --git a/makefiles/lint/yaml/yamllint.helm b/makefiles/lint/yaml/byrepo/voltha-lib-go/yamllint.helm
similarity index 92%
rename from makefiles/lint/yaml/yamllint.helm
rename to makefiles/lint/yaml/byrepo/voltha-lib-go/yamllint.helm
index 6c7787b..bf1d2b9 100644
--- a/makefiles/lint/yaml/yamllint.helm
+++ b/makefiles/lint/yaml/byrepo/voltha-lib-go/yamllint.helm
@@ -1,6 +1,6 @@
 # -*- 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.
diff --git a/makefiles/lint/yaml/byrepo/voltha-lib-go/yamllint.mk b/makefiles/lint/yaml/byrepo/voltha-lib-go/yamllint.mk
new file mode 100644
index 0000000..fb56e3a
--- /dev/null
+++ b/makefiles/lint/yaml/byrepo/voltha-lib-go/yamllint.mk
@@ -0,0 +1,72 @@
+# -*- 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.
+#
+# SPDX-FileCopyrightText: 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
+
+$(if $(DEBUG),$(warning ENTER))
+
+--onf-mk-lint-yaml-- := true#       # Inhibit loading downstream lint-yaml targets
+
+# yamllint      := $(env-clean) yamllint
+# yamllint      := $(activate) && yamllint
+
+YAMLLINT = $(activate) && yamllint
+
+## -------------------------------
+## Add requirement(s) for checking
+## -------------------------------
+yamllint-cfg  := yamllint.helm
+yamllint-conf = $(wildcard $(yamllint-cfg) $(ONF_MAKEDIR)/lint/yaml/$(yamllint-cfg))
+yamllint-args += $(addprefix --config-file$(space),$(yamllint-conf))
+yamllint-args += --strict
+
+## -----------------------------------------------------------------------
+## Intent: Use the yaml command to perform syntax checking.
+## -----------------------------------------------------------------------
+ifndef NO-LINT-YAML
+  # lint-yaml-mode := $(if $(have-yaml-files),modified,all)
+  lint      : lint-yaml
+  lint-yaml : lint-yaml-votlha-lib-go
+#  lint-yaml : lint-yaml-all-votlha-lib-go-$(lint-yaml-mode)
+endif# NO-LINT-YAML
+
+## -----------------------------------------------------------------------
+## ----------------------------------------------------------------------
+lint-yaml-votlha-lib-go: lint-yaml-cmd-version
+
+	$(call banner-enter,Target $@)
+	$(HIDE)$(MAKE) --no-print-directory lint-yaml-install
+
+	$(HIDE)$(env-clean) $(call gen-yaml-find-cmd) \
+	    | $(env-clean) $(xargs-cmd) -I'{}' \
+		bash -c "$(YAMLLINT) $(yamllint-args) {}"
+	$(call banner-leave,Target $@)
+
+## -----------------------------------------------------------------------
+## Intent: Display command usage
+## -----------------------------------------------------------------------
+help::
+  # lint-yaml help already displayed by lint/yaml/help.mk
+  ifdef VERBOSE
+	@echo '  $(MAKE) lint-yaml YAML_FILES=...'
+	@echo '  lint-yaml-votlha-lib-go   lint-yaml for repo:voltha-lib-go'
+  endif
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]
diff --git a/makefiles/lint/yaml/find_utils.mk b/makefiles/lint/yaml/find_utils.mk
new file mode 100644
index 0000000..49d4cb0
--- /dev/null
+++ b/makefiles/lint/yaml/find_utils.mk
@@ -0,0 +1,32 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Intent:
+#   o Construct a find command able to gather python files with filtering.
+#   o Used by library makefiles flake8.mk and pylint.mk for iteration.
+# -----------------------------------------------------------------------
+
+## -----------------------------------------------------------------------
+## Intent: Construct a string for invoking find \( excl-pattern \) -prune
+# -----------------------------------------------------------------------
+gen-yaml-find-excl = \
+  $(strip \
+	-name '__ignored__' \
+	$(foreach dir,$($(1)),-o -name $(dir)) \
+  )
+
+## -----------------------------------------------------------------------
+## Intent: Construct a find command to gather a list of python files
+##         with exclusions.
+## -----------------------------------------------------------------------
+## Usage:
+#	$(activate) & $(call gen-python-find-cmd) | $(args-n1) pylint
+## -----------------------------------------------------------------------
+gen-yaml-find-cmd = \
+  $(strip \
+    find . \
+      \( $(call gen-yaml-find-excl,onf-excl-dirs) \) -prune \
+      -o \( -iname '*.yaml' -o -iname '*.yml' \) \
+      -print0 \
+  )
+
+# [EOF]
diff --git a/makefiles/lint/yaml/help.mk b/makefiles/lint/yaml/help.mk
new file mode 100644
index 0000000..ef8621e
--- /dev/null
+++ b/makefiles/lint/yaml/help.mk
@@ -0,0 +1,41 @@
+# -*- 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))
+
+## ---------------------------------------------------------------------------
+## Intent: Display a help banner early so includes below that also define
+##         help targets will be displayed beneath a high level banner.
+## ---------------------------------------------------------------------------
+help ::
+  ifndef VERBOSE
+	@echo '  lint-yaml          Invoke all yaml linting targets'
+  else
+	$(HIDE)$(MAKE) --no-print-directory help-lint-yaml
+  endif
+
+## ---------------------------------------------------------------------------
+## Intent: Display extended target help
+## ---------------------------------------------------------------------------
+help-lint-yaml:
+	@echo
+	@echo '[LINT: yaml]   (make lint-yaml VERBOSE=1)'
+	@echo '  lint-yaml          Invoke all yaml linting targets'
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]
diff --git a/makefiles/lint/yaml/include.mk b/makefiles/lint/yaml/include.mk
new file mode 100644
index 0000000..26c4a7f
--- /dev/null
+++ b/makefiles/lint/yaml/include.mk
@@ -0,0 +1,42 @@
+# -*- 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.
+# -----------------------------------------------------------------------
+
+ifndef --onf-mk-lint-yaml--
+
+$(if $(DEBUG),$(warning ENTER))
+
+##--------------------##
+##---]  INCLUDES  [---##
+##--------------------##
+include $(ONF_MAKEDIR)/lint/yaml/help.mk
+include $(ONF_MAKEDIR)/lint/yaml/find_utils.mk
+include $(ONF_MAKEDIR)/lint/yaml/install.mk
+
+# [TODO] Consolidate and refactor to support a simpler answer
+# Special snowflake linting requirements
+-include $(ONF_MAKEDIR)/lint/yaml/byrepo/$(--repo-name--)/include.mk
+
+# Standard lint-yaml targets
+include $(ONF_MAKEDIR)/lint/yaml/yamllint.mk
+
+--onf-mk-lint-yaml-- := true#        # Flag to inhibit re-including
+
+$(if $(DEBUG),$(warning LEAVE))
+
+endif # --onf-mk-lint-yaml--
+
+# [EOF]
diff --git a/makefiles/lint/yaml/install.mk b/makefiles/lint/yaml/install.mk
new file mode 100644
index 0000000..62b777d
--- /dev/null
+++ b/makefiles/lint/yaml/install.mk
@@ -0,0 +1,73 @@
+# -*- 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.
+#
+# SPDX-FileCopyrightText: 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
+
+$(if $(DEBUG),$(warning ENTER))
+
+## -----------------------------------------------------------------------
+## Intent: Install the yamllint tool
+## -----------------------------------------------------------------------
+.PHONY: lint-yaml-install
+
+# -----------------------------------------------------------------------
+# We can(/should?) define a command macro
+# wait a bit until use cases are better known.
+# Initial use required inserting xargs bash -c "$(YAMLLINT) {}"
+# -----------------------------------------------------------------------
+# YAMLLINT ?= $(venv-activate-bin)/yamllint
+# YAMLLINT ?= $(activate) && yamllint
+
+## -----------------------------------------------------------------------
+## Intent: Display yamllint command version string.
+##   Note: As a side effect, install yamllint by dependency
+## -----------------------------------------------------------------------
+.PHONY: lint-yaml-cmd-version
+lint-yaml-cmd-version : $(venv-activate-bin)/yamllint
+
+	$(HIDE) echo
+	$< --version
+
+## -----------------------------------------------------------------------
+## Intent: On-demand instalation of the yamllint command
+## -----------------------------------------------------------------------
+lint-yaml-install := $(venv-activate-bin)/yamllint
+$(lint-yaml-install) : $(venv-activate-script)
+
+	$(call banner-enter,Target $@)
+	$(activate) && pip install yamllint
+	$(call banner-leave,Target $@)
+
+## -----------------------------------------------------------------------
+## Intent: Purge yamllint tool installation
+## -----------------------------------------------------------------------
+sterile ::
+	$(HIDE)$(RM) "$(venv-abs-bin)/yamllint"
+	$(HIDE)$(RM) -r .venv/lib/*/site-packages/yamllint
+
+        # Remove both file:command and dir:libraries
+        # find "$(venv-abs-path)" -iname 'yamllint' -print0 \
+        #    | $(xargs-n1-clean) $(RM) -r {}
+
+## -----------------------------------------------------------------------
+## Intent: Display command usage
+## -----------------------------------------------------------------------
+help::
+	@echo '  lint-yaml-install       Install the yamllint tool'
+
+# [EOF]
diff --git a/makefiles/lint/yaml/yamllint.mk b/makefiles/lint/yaml/yamllint.mk
index 9556a45..1563c7c 100644
--- a/makefiles/lint/yaml/yamllint.mk
+++ b/makefiles/lint/yaml/yamllint.mk
@@ -1,8 +1,8 @@
 # -*- 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");
+# 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
 #
@@ -13,41 +13,66 @@
 # 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
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+.PHONY: lint-yaml lint-yaml-all lint-yaml-modified
 
-## -------------------------------
-## 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))
+have-yaml-files := $(if $(strip $(YAML_FILES)),true)
+YAML_FILES      ?= $(error YAML_FILES= is required)
 
-# yamllint-args := --no-warnings
-# yamllint-args := --strict
-
-yamllint-find := find . -name 'vendor' -prune
-yamllint-find += -o -name '*.yaml' -type f
-yamllint-find += -print0
+YAMLLINT = $(activate) && yamllint
+yamllint-args += --strict
 
 ## -----------------------------------------------------------------------
+## Intent: Use the yaml command to perform syntax checking.
 ## -----------------------------------------------------------------------
-lint lint-yaml:
-	$(HIDE)$(env-clean) $(yamllint-find) \
-	    | xargs -0 --no-run-if-empty -t -n1 $(yamllint) $(yamllint-args)
+ifndef NO-LINT-YAML
+  lint-yaml-mode := $(if $(have-yaml-files),modified,all)
+  lint      : lint-yaml
+  lint-yaml : lint-yaml-$(lint-yaml-mode)
+endif# NO-LINT-YAML
 
 ## -----------------------------------------------------------------------
+## Intent: exhaustive yaml syntax checking
+## -----------------------------------------------------------------------
+lint-yaml-all: lint-yaml-cmd-version
+
+	$(call banner-enter,Target $@)
+	$(HIDE)$(MAKE) --no-print-directory lint-yaml-install
+	$(HIDE)$(activate) && $(call gen-yaml-find-cmd) \
+	    | $(env-clean) $(xargs-cmd) -I'{}' \
+		bash -c "$(YAMLLINT) $(yamllint-args) {}"
+	$(call banner-leave,Target $@)
+
+## -----------------------------------------------------------------------
+## Intent: check deps for format and python3 cleanliness
+## Note:
+##   yaml --py3k option no longer supported
+## -----------------------------------------------------------------------
+lint-yaml-modified: lint-yaml-cmd-version
+
+	$(call banner-enter,Target $@)
+	$(HIDE)$(MAKE) --no-print-directory lint-yaml-install
+	$(YAMLLINT) $(yamllint-args) $(YAML_FILES)
+	$(call banner-leave,Target $@)
+
+## -----------------------------------------------------------------------
+## Intent: Display command usage
 ## -----------------------------------------------------------------------
 help::
-	@echo "  lint-yaml                     Syntax check yaml sources"
+	@echo '  lint-yaml          Syntax check python using the yaml command'
+  ifdef VERBOSE
+	@echo '  $(MAKE) lint-yaml YAML_FILES=...'
+	@echo '  lint-yaml-all       yaml checking: exhaustive'
+	@echo '  lint-yaml-modified  yaml checking: only locally modified'
+	@echo '  lint-yaml-install   Install the pylint command'
+  endif
 
-$(if $(DEBUG),$(warning ENTER))
+$(if $(DEBUG),$(warning LEAVE))
 
 # [EOF]