diff --git a/.prow.sh b/.prow.sh
index b18c53581..bdc8aebc7 100755
--- a/.prow.sh
+++ b/.prow.sh
@@ -1,7 +1,23 @@
 #! /bin/bash -e
+
+# Copyright 2021 The Kubernetes Authors.
+#
+# 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.
+
 # This is for testing csi-release-tools itself in Prow. All other
 # repos use prow.sh for that, but as csi-release-tools isn't a normal
 # repo with some Go code in it, it has a custom Prow test script.
 
 ./verify-shellcheck.sh "$(pwd)"
+./verify-spelling.sh
+./verify-boilerplate.sh
diff --git a/SIDECAR_RELEASE_PROCESS.md b/SIDECAR_RELEASE_PROCESS.md
index 4575eb819..3aee7a81b 100644
--- a/SIDECAR_RELEASE_PROCESS.md
+++ b/SIDECAR_RELEASE_PROCESS.md
@@ -11,7 +11,7 @@ The release manager must:
   kubernetes/org to request membership
 * Be a top level approver for the repository. To become a top level approver,
   the candidate must demonstrate ownership and deep knowledge of the repository
-  through active maintainence, responding to and fixing issues, reviewing PRs,
+  through active maintenance, responding to and fixing issues, reviewing PRs,
   test triage.
 * Be part of the maintainers or admin group for the repository. admin is a
   superset of maintainers, only maintainers level is required for cutting a
diff --git a/cloudbuild.sh b/cloudbuild.sh
index 3ba11ecad..a80771e03 100755
--- a/cloudbuild.sh
+++ b/cloudbuild.sh
@@ -1,5 +1,19 @@
 #! /bin/bash
 
+# Copyright 2014 The Kubernetes Authors.
+#
+# 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.
+
 # shellcheck disable=SC1091
 . release-tools/prow.sh
 
diff --git a/prow.sh b/prow.sh
index 161f347f6..431364055 100755
--- a/prow.sh
+++ b/prow.sh
@@ -1,5 +1,5 @@
 #! /bin/bash
-#
+
 # Copyright 2019 The Kubernetes Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -73,7 +73,7 @@ configvar CSI_PROW_BUILD_PLATFORMS "linux amd64; windows amd64 .exe; linux ppc64
 # which is disabled with GOFLAGS=-mod=vendor).
 configvar GOFLAGS_VENDOR "$( [ -d vendor ] && echo '-mod=vendor' )" "Go flags for using the vendor directory"
 
-# Go versions can be specified seperately for different tasks
+# Go versions can be specified separately for different tasks
 # If the pre-installed Go is missing or a different
 # version, the required version here will get installed
 # from https://golang.org/dl/.
@@ -293,7 +293,7 @@ configvar CSI_PROW_E2E_FOCUS_LATEST '\[Feature:VolumeSnapshotDataSource\]' "non-
 configvar CSI_PROW_E2E_FOCUS "$(get_versioned_variable CSI_PROW_E2E_FOCUS "${csi_prow_kubernetes_version_suffix}")" "non-alpha, feature-tagged tests"
 
 # Serial vs. parallel is always determined by these regular expressions.
-# Individual regular expressions are seperated by spaces for readability
+# Individual regular expressions are separated by spaces for readability
 # and expected to not contain spaces. Use dots instead. The complete
 # regex for Ginkgo will be created by joining the individual terms.
 configvar CSI_PROW_E2E_SERIAL '\[Serial\] \[Disruptive\]' "tags for serial E2E tests"
@@ -998,7 +998,7 @@ make_test_to_junit () {
         echo "$line" # pass through
         if echo "$line" | grep -q "^### [^ ]*:$"; then
             if [ "$testname" ]; then
-                # previous test succesful
+                # previous test successful
                 echo "    </system-out>" >>"$out"
                 echo "  </testcase>" >>"$out"
             fi
diff --git a/verify-boilerplate.sh b/verify-boilerplate.sh
index ff376e545..3315803b4 100755
--- a/verify-boilerplate.sh
+++ b/verify-boilerplate.sh
@@ -30,7 +30,7 @@ REPO_ROOT=$(dirname "${BASH_SOURCE[0]}")
 boilerDir="${REPO_ROOT}/boilerplate"
 boiler="${boilerDir}/boilerplate.py"
 
-files_need_boilerplate=("$("${boiler}" --rootdir="${REPO_ROOT}" --verbose)")
+mapfile -t files_need_boilerplate < <("${boiler}" --rootdir="${REPO_ROOT}" --verbose)
 
 # Run boilerplate.py unit tests
 unitTestOut="$(mktemp)"
diff --git a/verify-spelling.sh b/verify-spelling.sh
index 9a41c9319..a7395cf86 100755
--- a/verify-spelling.sh
+++ b/verify-spelling.sh
@@ -21,7 +21,7 @@ set -o pipefail
 TOOL_VERSION="v0.3.4"
 
 # cd to the root path
-ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd -P)"
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd -P)"
 cd "${ROOT}"
 
 # create a temporary directory
diff --git a/verify-subtree.sh b/verify-subtree.sh
index f04a9fa26..aa72194a4 100755
--- a/verify-subtree.sh
+++ b/verify-subtree.sh
@@ -1,5 +1,5 @@
 #! /bin/sh -e
-#
+
 # Copyright 2019 The Kubernetes Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");