diff --git a/.copywrite.hcl b/.copywrite.hcl
index 454a0c04bd..4b4d238cc4 100644
--- a/.copywrite.hcl
+++ b/.copywrite.hcl
@@ -13,6 +13,9 @@ project {
   # files or folders should be ignored
   header_ignore = [
     "**/*.tf",
+    "**/*.tftest.hcl",
+    "testing/equivalence-tests/**/.terraform.lock.hcl",
+    "website/docs/**/examples/**",
     "**/testdata/**",
     "**/*.pb.go",
     "**/*_string.go",
diff --git a/.github/scripts/update_top_issues_ranking/main.go b/.github/scripts/update_top_issues_ranking/main.go
index c1fb87cd4f..476f7f03ae 100644
--- a/.github/scripts/update_top_issues_ranking/main.go
+++ b/.github/scripts/update_top_issues_ranking/main.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package main
 
 import (
diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 462234ee69..86633d0ecd 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -214,6 +214,14 @@ jobs:
         with:
           version: v1.58
           only-new-issues: true
+      
+      - name: "Copyright headers"
+        run: |
+          go run github.com/hashicorp/copywrite headers --plan
+          if [[ $? != 0 ]]; then
+            echo >&2 "ERROR: some files are missing required copyright headers. Run `scripts/add-copyright-headers.sh` locally and then commit the updated files."
+            exit 1
+          fi
 
   license-checks:
     name: "License Checks"
diff --git a/.golangci.yml b/.golangci.yml
index d186c50cdb..2d86f7a61b 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -1,3 +1,8 @@
+# Copyright (c) The OpenTofu Authors
+# SPDX-License-Identifier: MPL-2.0
+# Copyright (c) 2023 HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 run:
   timeout: 30m
 
diff --git a/copyright_headers.go b/copyright_headers.go
deleted file mode 100644
index 13bd51c647..0000000000
--- a/copyright_headers.go
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright (c) The OpenTofu Authors
-// SPDX-License-Identifier: MPL-2.0
-// Copyright (c) 2023 HashiCorp, Inc.
-// SPDX-License-Identifier: MPL-2.0
-
-//go:build tools
-// +build tools
-
-package main
-
-import (
-	_ "github.com/hashicorp/copywrite"
-)
-
-//go:generate go run github.com/hashicorp/copywrite headers
diff --git a/internal/addrs/provider_function.go b/internal/addrs/provider_function.go
index 83d4ac9f6c..619f3b766a 100644
--- a/internal/addrs/provider_function.go
+++ b/internal/addrs/provider_function.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package addrs
 
 import (
diff --git a/internal/collections/set.go b/internal/collections/set.go
index 83ac2a0f37..0719df9db5 100644
--- a/internal/collections/set.go
+++ b/internal/collections/set.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package collections
 
 import (
diff --git a/internal/collections/set_test.go b/internal/collections/set_test.go
index d9cf178c0f..31107147fd 100644
--- a/internal/collections/set_test.go
+++ b/internal/collections/set_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package collections_test
 
 import (
diff --git a/internal/command/e2etest/encryption_test.go b/internal/command/e2etest/encryption_test.go
index 444fb31004..72fdf4f047 100644
--- a/internal/command/e2etest/encryption_test.go
+++ b/internal/command/e2etest/encryption_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package e2etest
 
 import (
diff --git a/internal/command/e2etest/provider_functions_test.go b/internal/command/e2etest/provider_functions_test.go
index 038cd691a7..1005fb9efe 100644
--- a/internal/command/e2etest/provider_functions_test.go
+++ b/internal/command/e2etest/provider_functions_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package e2etest
 
 import (
diff --git a/internal/command/meta_encryption.go b/internal/command/meta_encryption.go
index 6a401cbfc4..0235433be1 100644
--- a/internal/command/meta_encryption.go
+++ b/internal/command/meta_encryption.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package command
 
 import (
diff --git a/internal/command/meta_ui.go b/internal/command/meta_ui.go
index 0c5c7c4e56..d79e02e4ec 100644
--- a/internal/command/meta_ui.go
+++ b/internal/command/meta_ui.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package command
 
 import (
diff --git a/internal/configs/hcl2shim/util_test.go b/internal/configs/hcl2shim/util_test.go
index 5d75d2b54d..8ead122db3 100644
--- a/internal/configs/hcl2shim/util_test.go
+++ b/internal/configs/hcl2shim/util_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package hcl2shim
 
 import (
diff --git a/internal/configs/shim.go b/internal/configs/shim.go
index 327d1220aa..b9bd813587 100644
--- a/internal/configs/shim.go
+++ b/internal/configs/shim.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package configs
 
 import (
diff --git a/internal/encryption/keyprovider/aws_kms/config.go b/internal/encryption/keyprovider/aws_kms/config.go
index 33d79b72bd..cd5094dc85 100644
--- a/internal/encryption/keyprovider/aws_kms/config.go
+++ b/internal/encryption/keyprovider/aws_kms/config.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package aws_kms
 
 import (
diff --git a/internal/encryption/keyprovider/aws_kms/config_assumerole.go b/internal/encryption/keyprovider/aws_kms/config_assumerole.go
index 421e51d7ca..8d006e7af2 100644
--- a/internal/encryption/keyprovider/aws_kms/config_assumerole.go
+++ b/internal/encryption/keyprovider/aws_kms/config_assumerole.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package aws_kms
 
 import (
diff --git a/internal/encryption/keyprovider/aws_kms/config_endpoints.go b/internal/encryption/keyprovider/aws_kms/config_endpoints.go
index b24a478358..243852eb74 100644
--- a/internal/encryption/keyprovider/aws_kms/config_endpoints.go
+++ b/internal/encryption/keyprovider/aws_kms/config_endpoints.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package aws_kms
 
 import (
diff --git a/internal/encryption/keyprovider/aws_kms/config_test.go b/internal/encryption/keyprovider/aws_kms/config_test.go
index b01c9b884a..d1f7847493 100644
--- a/internal/encryption/keyprovider/aws_kms/config_test.go
+++ b/internal/encryption/keyprovider/aws_kms/config_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package aws_kms
 
 import (
diff --git a/internal/encryption/keyprovider/aws_kms/descriptor.go b/internal/encryption/keyprovider/aws_kms/descriptor.go
index 1ae90587ed..d8e22bb7fe 100644
--- a/internal/encryption/keyprovider/aws_kms/descriptor.go
+++ b/internal/encryption/keyprovider/aws_kms/descriptor.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package aws_kms
 
 import (
diff --git a/internal/encryption/keyprovider/aws_kms/provider.go b/internal/encryption/keyprovider/aws_kms/provider.go
index 2cb57cc2aa..1e2273662d 100644
--- a/internal/encryption/keyprovider/aws_kms/provider.go
+++ b/internal/encryption/keyprovider/aws_kms/provider.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package aws_kms
 
 import (
diff --git a/internal/encryption/keyprovider/aws_kms/provider_test.go b/internal/encryption/keyprovider/aws_kms/provider_test.go
index 28f6ccb275..e3b42f7b6d 100644
--- a/internal/encryption/keyprovider/aws_kms/provider_test.go
+++ b/internal/encryption/keyprovider/aws_kms/provider_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package aws_kms
 
 import (
diff --git a/internal/encryption/keyprovider/errors.go b/internal/encryption/keyprovider/errors.go
index 96b15f1034..e82e033540 100644
--- a/internal/encryption/keyprovider/errors.go
+++ b/internal/encryption/keyprovider/errors.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package keyprovider
 
 import "fmt"
diff --git a/internal/encryption/keyprovider/gcp_kms/compliance_test.go b/internal/encryption/keyprovider/gcp_kms/compliance_test.go
index 04c5120f96..878c0466b5 100644
--- a/internal/encryption/keyprovider/gcp_kms/compliance_test.go
+++ b/internal/encryption/keyprovider/gcp_kms/compliance_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package gcp_kms
 
 import (
diff --git a/internal/encryption/keyprovider/gcp_kms/config.go b/internal/encryption/keyprovider/gcp_kms/config.go
index f4c35dcac3..e2eca34228 100644
--- a/internal/encryption/keyprovider/gcp_kms/config.go
+++ b/internal/encryption/keyprovider/gcp_kms/config.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package gcp_kms
 
 import (
diff --git a/internal/encryption/keyprovider/gcp_kms/descriptor.go b/internal/encryption/keyprovider/gcp_kms/descriptor.go
index 2c8e34dbd6..7568b0bd1e 100644
--- a/internal/encryption/keyprovider/gcp_kms/descriptor.go
+++ b/internal/encryption/keyprovider/gcp_kms/descriptor.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package gcp_kms
 
 import (
diff --git a/internal/encryption/keyprovider/gcp_kms/provider.go b/internal/encryption/keyprovider/gcp_kms/provider.go
index 86e2dd9842..70b294ed09 100644
--- a/internal/encryption/keyprovider/gcp_kms/provider.go
+++ b/internal/encryption/keyprovider/gcp_kms/provider.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package gcp_kms
 
 import (
diff --git a/internal/encryption/keyprovider/openbao/client.go b/internal/encryption/keyprovider/openbao/client.go
index 59d7a4db08..dfaeb99b6e 100644
--- a/internal/encryption/keyprovider/openbao/client.go
+++ b/internal/encryption/keyprovider/openbao/client.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package openbao
 
 import (
diff --git a/internal/encryption/keyprovider/openbao/compliance_test.go b/internal/encryption/keyprovider/openbao/compliance_test.go
index 0e977a2942..e81e7aef5f 100644
--- a/internal/encryption/keyprovider/openbao/compliance_test.go
+++ b/internal/encryption/keyprovider/openbao/compliance_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package openbao
 
 import (
diff --git a/internal/encryption/keyprovider/openbao/config.go b/internal/encryption/keyprovider/openbao/config.go
index d3a38fc6af..bb9794b7ac 100644
--- a/internal/encryption/keyprovider/openbao/config.go
+++ b/internal/encryption/keyprovider/openbao/config.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package openbao
 
 import (
diff --git a/internal/encryption/keyprovider/openbao/descriptor.go b/internal/encryption/keyprovider/openbao/descriptor.go
index 591b334380..1c436b2c83 100644
--- a/internal/encryption/keyprovider/openbao/descriptor.go
+++ b/internal/encryption/keyprovider/openbao/descriptor.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package openbao
 
 import "github.com/opentofu/opentofu/internal/encryption/keyprovider"
diff --git a/internal/encryption/keyprovider/openbao/provider.go b/internal/encryption/keyprovider/openbao/provider.go
index 594a5fa6e1..2c551d0ee5 100644
--- a/internal/encryption/keyprovider/openbao/provider.go
+++ b/internal/encryption/keyprovider/openbao/provider.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package openbao
 
 import (
diff --git a/internal/encryption/keyprovider/output.go b/internal/encryption/keyprovider/output.go
index 057b51ef80..94b027c338 100644
--- a/internal/encryption/keyprovider/output.go
+++ b/internal/encryption/keyprovider/output.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package keyprovider
 
 import "github.com/zclconf/go-cty/cty"
diff --git a/internal/encryption/method/aesgcm/aesgcm_internal_test.go b/internal/encryption/method/aesgcm/aesgcm_internal_test.go
index 2e60a5c201..686bd326ce 100644
--- a/internal/encryption/method/aesgcm/aesgcm_internal_test.go
+++ b/internal/encryption/method/aesgcm/aesgcm_internal_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package aesgcm
 
 import (
diff --git a/internal/encryption/method/aesgcm/aesgcm_test.go b/internal/encryption/method/aesgcm/aesgcm_test.go
index 4c8cf01516..29a5512157 100644
--- a/internal/encryption/method/aesgcm/aesgcm_test.go
+++ b/internal/encryption/method/aesgcm/aesgcm_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package aesgcm_test
 
 import (
diff --git a/internal/encryption/method/aesgcm/config_test.go b/internal/encryption/method/aesgcm/config_test.go
index b5827fe384..6aec087423 100644
--- a/internal/encryption/method/aesgcm/config_test.go
+++ b/internal/encryption/method/aesgcm/config_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package aesgcm
 
 import (
diff --git a/internal/encryption/method/aesgcm/descriptor_test.go b/internal/encryption/method/aesgcm/descriptor_test.go
index c96fa79827..d4d4292fa4 100644
--- a/internal/encryption/method/aesgcm/descriptor_test.go
+++ b/internal/encryption/method/aesgcm/descriptor_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package aesgcm_test
 
 import (
diff --git a/internal/encryption/method/aesgcm/example_test.go b/internal/encryption/method/aesgcm/example_test.go
index fecf0b1bfb..267e1a0942 100644
--- a/internal/encryption/method/aesgcm/example_test.go
+++ b/internal/encryption/method/aesgcm/example_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package aesgcm_test
 
 import (
diff --git a/internal/encryption/method/aesgcm/panic.go b/internal/encryption/method/aesgcm/panic.go
index 5e6d79336c..03de0b7b9e 100644
--- a/internal/encryption/method/aesgcm/panic.go
+++ b/internal/encryption/method/aesgcm/panic.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package aesgcm
 
 import "fmt"
diff --git a/internal/encryption/method/aesgcm/panic_test.go b/internal/encryption/method/aesgcm/panic_test.go
index 5ad645cbf1..944b7b1a61 100644
--- a/internal/encryption/method/aesgcm/panic_test.go
+++ b/internal/encryption/method/aesgcm/panic_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package aesgcm
 
 import (
diff --git a/internal/encryption/method/errors.go b/internal/encryption/method/errors.go
index 565f1a437b..64a4c11c08 100644
--- a/internal/encryption/method/errors.go
+++ b/internal/encryption/method/errors.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package method
 
 import "fmt"
diff --git a/internal/encryption/method/unencrypted/method.go b/internal/encryption/method/unencrypted/method.go
index 0a78d0e5fa..844a4f0de3 100644
--- a/internal/encryption/method/unencrypted/method.go
+++ b/internal/encryption/method/unencrypted/method.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package unencrypted
 
 import (
diff --git a/internal/lang/blocktoattr/functions.go b/internal/lang/blocktoattr/functions.go
index 8781c324e5..19a14acd8e 100644
--- a/internal/lang/blocktoattr/functions.go
+++ b/internal/lang/blocktoattr/functions.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package blocktoattr
 
 import (
diff --git a/internal/plugin/convert/function.go b/internal/plugin/convert/function.go
index 878de7447e..736c94d114 100644
--- a/internal/plugin/convert/function.go
+++ b/internal/plugin/convert/function.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package convert
 
 import (
diff --git a/internal/plugin6/convert/function.go b/internal/plugin6/convert/function.go
index 56d9f6edb6..451970a7ed 100644
--- a/internal/plugin6/convert/function.go
+++ b/internal/plugin6/convert/function.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package convert
 
 import (
diff --git a/internal/tofu/context_functions.go b/internal/tofu/context_functions.go
index b5b03ca7c9..7957cea8fa 100644
--- a/internal/tofu/context_functions.go
+++ b/internal/tofu/context_functions.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package tofu
 
 import (
diff --git a/internal/tofu/context_functions_test.go b/internal/tofu/context_functions_test.go
index fc1b735247..3a92340c42 100644
--- a/internal/tofu/context_functions_test.go
+++ b/internal/tofu/context_functions_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package tofu
 
 import (
diff --git a/internal/tofu/transform_attach_config_resource_test.go b/internal/tofu/transform_attach_config_resource_test.go
index d6eae363c7..a8e8181c26 100644
--- a/internal/tofu/transform_attach_config_resource_test.go
+++ b/internal/tofu/transform_attach_config_resource_test.go
@@ -1,3 +1,8 @@
+// Copyright (c) The OpenTofu Authors
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) 2023 HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package tofu
 
 import (
diff --git a/scripts/add-copyright-headers.sh b/scripts/add-copyright-headers.sh
new file mode 100755
index 0000000000..34b332701b
--- /dev/null
+++ b/scripts/add-copyright-headers.sh
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+# Copyright (c) The OpenTofu Authors
+# SPDX-License-Identifier: MPL-2.0
+# Copyright (c) 2023 HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
+go run github.com/hashicorp/copywrite headers
diff --git a/tools.go b/tools.go
index 91c8520bb6..bae84b9e7b 100644
--- a/tools.go
+++ b/tools.go
@@ -13,6 +13,7 @@ package tools
 // Go toolchain to see that we need to include them in go.mod and go.sum.
 
 import (
+	_ "github.com/hashicorp/copywrite"
 	_ "github.com/nishanths/exhaustive/cmd/exhaustive"
 	_ "golang.org/x/tools/cmd/stringer"
 	_ "honnef.co/go/tools/cmd/staticcheck"
diff --git a/website/README.md b/website/README.md
index 227bf53549..014e9ee37f 100644
--- a/website/README.md
+++ b/website/README.md
@@ -33,3 +33,7 @@ To update the sidebar navigation, you must edit the appropriate `nav-data.json`
 Currently, you can preview your changes through the [opentofu/opentofu.org](https://github.com/opentofu/opentofu.org/blob/main/README.md) repository.
 
 Follow the [Getting Started](https://github.com/opentofu/opentofu.org/blob/main/README.md#getting-started) guide.
+
+## Copyright headers for code examples
+
+In order to not include copyright headers for code examples used in docs, please, add the files under `examples` folder. This way, it will be ignored on automated copyright headers check.
diff --git a/website/docs/intro/install/DO_NOT_ADD_LICENSE_HEADERS.txt b/website/docs/intro/install/DO_NOT_ADD_LICENSE_HEADERS.txt
deleted file mode 100644
index 0880c64b49..0000000000
--- a/website/docs/intro/install/DO_NOT_ADD_LICENSE_HEADERS.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-Please do not add license headers and end-of-file line breaks to the examples in this folder.
-They are embedded in the website, and it makes for really hard reading to have license headers 5-6 times in a page.
\ No newline at end of file
diff --git a/website/docs/intro/install/alpine.mdx b/website/docs/intro/install/alpine.mdx
index 1d4697f397..4e3cd8f02d 100644
--- a/website/docs/intro/install/alpine.mdx
+++ b/website/docs/intro/install/alpine.mdx
@@ -8,8 +8,8 @@ description: |-
 import CodeBlock from '@theme/CodeBlock';
 import Tabs from '@theme/Tabs';
 import TabItem from '@theme/TabItem';
-import ApkConvenienceScript from '!!raw-loader!./alpine-convenience.sh'
-import ApkManualScript from '!!raw-loader!./alpine-manual.sh'
+import ApkConvenienceScript from '!!raw-loader!./examples/alpine-convenience.sh'
+import ApkManualScript from '!!raw-loader!./examples/alpine-manual.sh'
 
 # Installing OpenTofu on Alpine Linux
 
diff --git a/website/docs/intro/install/alpine.sh b/website/docs/intro/install/alpine.sh
index 1d050e52c7..5e83b274cc 100755
--- a/website/docs/intro/install/alpine.sh
+++ b/website/docs/intro/install/alpine.sh
@@ -1,13 +1,18 @@
 #!/bin/sh
+# Copyright (c) The OpenTofu Authors
+# SPDX-License-Identifier: MPL-2.0
+# Copyright (c) 2023 HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 
 set -e
 
 apk add curl
 
 if [ "$1" = "--convenience" ]; then
-  sh -x alpine-convenience.sh
+  sh -x examples/alpine-convenience.sh
 else
-  sh -x alpine-manual.sh
+  sh -x examples/alpine-manual.sh
 fi
 
 tofu --version
\ No newline at end of file
diff --git a/website/docs/intro/install/brew.sh b/website/docs/intro/install/brew.sh
index 291d8a4f71..473cdd5b91 100755
--- a/website/docs/intro/install/brew.sh
+++ b/website/docs/intro/install/brew.sh
@@ -1,4 +1,9 @@
 #!/bin/bash
+# Copyright (c) The OpenTofu Authors
+# SPDX-License-Identifier: MPL-2.0
+# Copyright (c) 2023 HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 
 set -ex
 
@@ -10,6 +15,6 @@ apt-get install -y curl git build-essential gcc procps curl file
 (echo; echo 'eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"') >> /root/.bashrc
 eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
 
-bash -x brew-install.sh
+bash -x examples/brew-install.sh
 
 tofu --version
diff --git a/website/docs/intro/install/bsd.mdx b/website/docs/intro/install/bsd.mdx
index 9cad42aa27..cb4f82c763 100644
--- a/website/docs/intro/install/bsd.mdx
+++ b/website/docs/intro/install/bsd.mdx
@@ -8,8 +8,8 @@ description: |-
 import CodeBlock from '@theme/CodeBlock';
 import Tabs from '@theme/Tabs';
 import TabItem from '@theme/TabItem';
-import ApkConvenienceScript from '!!raw-loader!./alpine-convenience.sh'
-import ApkManualScript from '!!raw-loader!./alpine-manual.sh'
+import ApkConvenienceScript from '!!raw-loader!./examples/alpine-convenience.sh'
+import ApkManualScript from '!!raw-loader!./examples/alpine-manual.sh'
 
 # Installing OpenTofu on FreeBSD
 
diff --git a/website/docs/intro/install/deb.mdx b/website/docs/intro/install/deb.mdx
index 61530a973f..5057ef4bd3 100644
--- a/website/docs/intro/install/deb.mdx
+++ b/website/docs/intro/install/deb.mdx
@@ -6,11 +6,11 @@ description: |-
 ---
 
 import CodeBlock from '@theme/CodeBlock';
-import DebConvenienceScript from '!!raw-loader!./deb-convenience.sh'
-import DebStep1Script from '!!raw-loader!./deb-step1.sh'
-import DebStep2Script from '!!raw-loader!./deb-step2.sh'
-import DebStep3Script from '!!raw-loader!./deb-step3.sh'
-import DebStep4Script from '!!raw-loader!./deb-step4.sh'
+import DebConvenienceScript from '!!raw-loader!./examples/deb-convenience.sh'
+import DebStep1Script from '!!raw-loader!./examples/deb-step1.sh'
+import DebStep2Script from '!!raw-loader!./examples/deb-step2.sh'
+import DebStep3Script from '!!raw-loader!./examples/deb-step3.sh'
+import DebStep4Script from '!!raw-loader!./examples/deb-step4.sh'
 import Buildkite from './buildkite'
 
 # Installing OpenTofu on .deb-based Linux (Debian, Ubuntu, etc.)
diff --git a/website/docs/intro/install/deb.sh b/website/docs/intro/install/deb.sh
index cd60764956..c300b2afe7 100755
--- a/website/docs/intro/install/deb.sh
+++ b/website/docs/intro/install/deb.sh
@@ -1,4 +1,9 @@
 #!/bin/bash
+# Copyright (c) The OpenTofu Authors
+# SPDX-License-Identifier: MPL-2.0
+# Copyright (c) 2023 HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 
 set -e
 
@@ -6,12 +11,12 @@ apt update
 apt install -y sudo curl
 
 if [ "$1" = "--convenience" ]; then
-  bash -ex deb-convenience.sh
+  bash -ex examples/deb-convenience.sh
 else
-  bash -ex deb-step1.sh
-  bash -ex deb-step2.sh
-  bash -ex deb-step3.sh
-  bash -ex deb-step4.sh
+  bash -ex examples/deb-step1.sh
+  bash -ex examples/deb-step2.sh
+  bash -ex examples/deb-step3.sh
+  bash -ex examples/deb-step4.sh
 fi
 
 tofu --version
\ No newline at end of file
diff --git a/website/docs/intro/install/docker.mdx b/website/docs/intro/install/docker.mdx
index 4b4721ed72..2ae2491f95 100644
--- a/website/docs/intro/install/docker.mdx
+++ b/website/docs/intro/install/docker.mdx
@@ -6,8 +6,8 @@ description: |-
 ---
 
 import CodeBlock from '@theme/CodeBlock';
-import DockerPullScript from '!!raw-loader!./docker-pull.sh'
-import DockerRunScript from '!!raw-loader!./docker-run.sh'
+import DockerPullScript from '!!raw-loader!./examples/docker-pull.sh'
+import DockerRunScript from '!!raw-loader!./examples/docker-run.sh'
 
 # Use OpenTofu as Docker Image
 
diff --git a/website/docs/intro/install/alpine-convenience.sh b/website/docs/intro/install/examples/alpine-convenience.sh
similarity index 100%
rename from website/docs/intro/install/alpine-convenience.sh
rename to website/docs/intro/install/examples/alpine-convenience.sh
diff --git a/website/docs/intro/install/alpine-manual.sh b/website/docs/intro/install/examples/alpine-manual.sh
similarity index 100%
rename from website/docs/intro/install/alpine-manual.sh
rename to website/docs/intro/install/examples/alpine-manual.sh
diff --git a/website/docs/intro/install/brew-install.sh b/website/docs/intro/install/examples/brew-install.sh
similarity index 100%
rename from website/docs/intro/install/brew-install.sh
rename to website/docs/intro/install/examples/brew-install.sh
diff --git a/website/docs/intro/install/deb-convenience.sh b/website/docs/intro/install/examples/deb-convenience.sh
similarity index 100%
rename from website/docs/intro/install/deb-convenience.sh
rename to website/docs/intro/install/examples/deb-convenience.sh
diff --git a/website/docs/intro/install/deb-step1.sh b/website/docs/intro/install/examples/deb-step1.sh
similarity index 100%
rename from website/docs/intro/install/deb-step1.sh
rename to website/docs/intro/install/examples/deb-step1.sh
diff --git a/website/docs/intro/install/deb-step2.sh b/website/docs/intro/install/examples/deb-step2.sh
similarity index 100%
rename from website/docs/intro/install/deb-step2.sh
rename to website/docs/intro/install/examples/deb-step2.sh
diff --git a/website/docs/intro/install/deb-step3.sh b/website/docs/intro/install/examples/deb-step3.sh
similarity index 100%
rename from website/docs/intro/install/deb-step3.sh
rename to website/docs/intro/install/examples/deb-step3.sh
diff --git a/website/docs/intro/install/deb-step4.sh b/website/docs/intro/install/examples/deb-step4.sh
similarity index 100%
rename from website/docs/intro/install/deb-step4.sh
rename to website/docs/intro/install/examples/deb-step4.sh
diff --git a/website/docs/intro/install/docker-pull.sh b/website/docs/intro/install/examples/docker-pull.sh
similarity index 100%
rename from website/docs/intro/install/docker-pull.sh
rename to website/docs/intro/install/examples/docker-pull.sh
diff --git a/website/docs/intro/install/docker-run.sh b/website/docs/intro/install/examples/docker-run.sh
similarity index 100%
rename from website/docs/intro/install/docker-run.sh
rename to website/docs/intro/install/examples/docker-run.sh
diff --git a/website/docs/intro/install/install-yum.sh b/website/docs/intro/install/examples/install-yum.sh
similarity index 100%
rename from website/docs/intro/install/install-yum.sh
rename to website/docs/intro/install/examples/install-yum.sh
diff --git a/website/docs/intro/install/install-zypper.sh b/website/docs/intro/install/examples/install-zypper.sh
similarity index 100%
rename from website/docs/intro/install/install-zypper.sh
rename to website/docs/intro/install/examples/install-zypper.sh
diff --git a/website/docs/intro/install/repo-yum.sh b/website/docs/intro/install/examples/repo-yum.sh
similarity index 100%
rename from website/docs/intro/install/repo-yum.sh
rename to website/docs/intro/install/examples/repo-yum.sh
diff --git a/website/docs/intro/install/repo-zypper.sh b/website/docs/intro/install/examples/repo-zypper.sh
similarity index 100%
rename from website/docs/intro/install/repo-zypper.sh
rename to website/docs/intro/install/examples/repo-zypper.sh
diff --git a/website/docs/intro/install/rpm-convenience.sh b/website/docs/intro/install/examples/rpm-convenience.sh
similarity index 100%
rename from website/docs/intro/install/rpm-convenience.sh
rename to website/docs/intro/install/examples/rpm-convenience.sh
diff --git a/website/docs/intro/install/standalone-install.ps1 b/website/docs/intro/install/examples/standalone-install.ps1
similarity index 100%
rename from website/docs/intro/install/standalone-install.ps1
rename to website/docs/intro/install/examples/standalone-install.ps1
diff --git a/website/docs/intro/install/standalone-install.sh b/website/docs/intro/install/examples/standalone-install.sh
similarity index 100%
rename from website/docs/intro/install/standalone-install.sh
rename to website/docs/intro/install/examples/standalone-install.sh
diff --git a/website/docs/intro/install/verify-checksum-linux.sh b/website/docs/intro/install/examples/verify-checksum-linux.sh
similarity index 100%
rename from website/docs/intro/install/verify-checksum-linux.sh
rename to website/docs/intro/install/examples/verify-checksum-linux.sh
diff --git a/website/docs/intro/install/verify-checksum-macos.sh b/website/docs/intro/install/examples/verify-checksum-macos.sh
similarity index 100%
rename from website/docs/intro/install/verify-checksum-macos.sh
rename to website/docs/intro/install/examples/verify-checksum-macos.sh
diff --git a/website/docs/intro/install/verify-checksum.ps1 b/website/docs/intro/install/examples/verify-checksum.ps1
similarity index 100%
rename from website/docs/intro/install/verify-checksum.ps1
rename to website/docs/intro/install/examples/verify-checksum.ps1
diff --git a/website/docs/intro/install/verify-cosign.ps1 b/website/docs/intro/install/examples/verify-cosign.ps1
similarity index 100%
rename from website/docs/intro/install/verify-cosign.ps1
rename to website/docs/intro/install/examples/verify-cosign.ps1
diff --git a/website/docs/intro/install/verify-cosign.sh b/website/docs/intro/install/examples/verify-cosign.sh
similarity index 100%
rename from website/docs/intro/install/verify-cosign.sh
rename to website/docs/intro/install/examples/verify-cosign.sh
diff --git a/website/docs/intro/install/homebrew.mdx b/website/docs/intro/install/homebrew.mdx
index 1e492e3bb1..05afb9719d 100644
--- a/website/docs/intro/install/homebrew.mdx
+++ b/website/docs/intro/install/homebrew.mdx
@@ -6,7 +6,7 @@ description: |-
 ---
 
 import CodeBlock from '@theme/CodeBlock';
-import BrewScript from '!!raw-loader!./brew-install.sh'
+import BrewScript from '!!raw-loader!./examples/brew-install.sh'
 
 # Installing OpenTofu via Homebrew
 
diff --git a/website/docs/intro/install/rpm.mdx b/website/docs/intro/install/rpm.mdx
index 8fb8bc5ce5..82c67253aa 100644
--- a/website/docs/intro/install/rpm.mdx
+++ b/website/docs/intro/install/rpm.mdx
@@ -8,11 +8,11 @@ description: |-
 import Tabs from '@theme/Tabs';
 import TabItem from '@theme/TabItem';
 import CodeBlock from '@theme/CodeBlock';
-import RpmConvenienceScript from '!!raw-loader!./rpm-convenience.sh'
-import YumRepoScript from '!!raw-loader!./repo-yum.sh'
-import ZypperRepoScript from '!!raw-loader!./repo-zypper.sh'
-import YumInstallScript from '!!raw-loader!./install-yum.sh'
-import ZypperInstallScript from '!!raw-loader!./install-zypper.sh'
+import RpmConvenienceScript from '!!raw-loader!./examples/rpm-convenience.sh'
+import YumRepoScript from '!!raw-loader!./examples/repo-yum.sh'
+import ZypperRepoScript from '!!raw-loader!./examples/repo-zypper.sh'
+import YumInstallScript from '!!raw-loader!./examples/install-yum.sh'
+import ZypperInstallScript from '!!raw-loader!./examples/install-zypper.sh'
 import Buildkite from "./buildkite";
 
 # Installing OpenTofu on RHEL, openSUSE, AlmaLinux and other RPM-based distributions
diff --git a/website/docs/intro/install/rpm.sh b/website/docs/intro/install/rpm.sh
index cfbb94f73d..bc1c4a9ad8 100755
--- a/website/docs/intro/install/rpm.sh
+++ b/website/docs/intro/install/rpm.sh
@@ -1,22 +1,27 @@
 #!/bin/bash
+# Copyright (c) The OpenTofu Authors
+# SPDX-License-Identifier: MPL-2.0
+# Copyright (c) 2023 HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 
 set -e
 
 if [ -f /usr/bin/zypper ]; then
   zypper install -y sudo
   if [ "$1" = "--convenience" ]; then
-    bash -ex rpm-convenience.sh
+    bash -ex examples/rpm-convenience.sh
   else
-    bash -ex repo-zypper.sh
-    bash -ex install-zypper.sh
+    bash -ex examples/repo-zypper.sh
+    bash -ex examples/install-zypper.sh
   fi
 else
   yum install -y sudo
   if [ "$1" = "--convenience" ]; then
-    bash -ex rpm-convenience.sh
+    bash -ex examples/rpm-convenience.sh
   else
-    bash -ex repo-yum.sh
-    bash -ex install-yum.sh
+    bash -ex examples/repo-yum.sh
+    bash -ex examples/install-yum.sh
   fi
 fi
 
diff --git a/website/docs/intro/install/standalone.mdx b/website/docs/intro/install/standalone.mdx
index 03f0d4db6b..f81a019bf3 100644
--- a/website/docs/intro/install/standalone.mdx
+++ b/website/docs/intro/install/standalone.mdx
@@ -8,13 +8,13 @@ description: |-
 import Tabs from '@theme/Tabs';
 import TabItem from '@theme/TabItem';
 import CodeBlock from '@theme/CodeBlock';
-import LinuxScript from '!!raw-loader!./standalone-install.sh'
-import WindowsScript from '!!raw-loader!./standalone-install.ps1'
-import VerifyChecksumPS1 from '!!raw-loader!./verify-checksum.ps1'
-import VerifyChecksumLinux from '!!raw-loader!./verify-checksum-linux.sh'
-import VerifyChecksumMacOS from '!!raw-loader!./verify-checksum-macos.sh'
-import VerifyCosignLinux from '!!raw-loader!./verify-cosign.sh'
-import VerifyCosignWindows from '!!raw-loader!./verify-cosign.ps1'
+import LinuxScript from '!!raw-loader!./examples/standalone-install.sh'
+import WindowsScript from '!!raw-loader!./examples/standalone-install.ps1'
+import VerifyChecksumPS1 from '!!raw-loader!./examples/verify-checksum.ps1'
+import VerifyChecksumLinux from '!!raw-loader!./examples/verify-checksum-linux.sh'
+import VerifyChecksumMacOS from '!!raw-loader!./examples/verify-checksum-macos.sh'
+import VerifyCosignLinux from '!!raw-loader!./examples/verify-cosign.sh'
+import VerifyCosignWindows from '!!raw-loader!./examples/verify-cosign.ps1'
 import Admonition from '@theme/Admonition';
 
 # Installing OpenTofu from GitHub Releases
diff --git a/website/docs/intro/install/test-install-instructions.sh b/website/docs/intro/install/test-install-instructions.sh
index 97374c2db8..390a2a731a 100755
--- a/website/docs/intro/install/test-install-instructions.sh
+++ b/website/docs/intro/install/test-install-instructions.sh
@@ -1,4 +1,9 @@
 #!/bin/bash
+# Copyright (c) The OpenTofu Authors
+# SPDX-License-Identifier: MPL-2.0
+# Copyright (c) 2023 HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 
 # This script tests the installation instructions on all relevant Linux operating systems listed in docker-compose.yaml.