diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 00ac65ef88..c28fc8a9a4 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -58,12 +58,11 @@ jobs:
       - run: sudo ${{ matrix.shell }} --version 2> /dev/null || dpkg -s ${{ matrix.shell }} 2> /dev/null || which ${{ matrix.shell }}
       - run: curl --version
       - run: wget --version
-      - uses: ljharb/actions/node/run@main
+      - uses: ljharb/actions/node/install@main
         name: 'npm install && version checks'
         with:
           node-version: 'lts/*'
           skip-ls-check: true
-          shell-command: echo installed
       - run: npm ls urchin
       - run: npx which urchin
       - run: env
diff --git a/test/fast/Unit tests/nvm_get_arch b/test/fast/Unit tests/nvm_get_arch
index 537a739fc8..c45cae01c8 100755
--- a/test/fast/Unit tests/nvm_get_arch	
+++ b/test/fast/Unit tests/nvm_get_arch	
@@ -2,11 +2,11 @@
 
 # Save the PATH as it was when the test started to restore it when it
 # finishes
-ORIG_PATH=$PATH
+ORIG_PATH="${PATH}"
 
 cleanup() {
   # Restore the PATH as it was when the test started
-  export PATH=ORIG_PATH
+  export PATH="${ORIG_PATH}"
 }
 
 die () { cleanup; echo "$@" ; exit 1; }
@@ -15,20 +15,23 @@ die () { cleanup; echo "$@" ; exit 1; }
 
 # Directory where mocked binaries used by nvm_get_arch for each OS/arch are
 # located
-MOCKS_DIR=`pwd`/../../mocks
+MOCKS_DIR="$(pwd)/../../mocks"
 # Sets the PATH for these tests to include the symlinks to the mocked
 # binaries
-export PATH=.:${PATH}
+export PATH=".:${PATH}"
 
 # Setups mock binaries for a given OS and arch that mimic
 # the output of the real binaries used by nvm_get_arch to guess
 # the architecture of a given system.
 setup_mock_arch() {
-  local OS=$1
-  local ARCH=$2
-  local OPT=$3
-
-  if [ "_$OS" = "_solaris" ] || [ "_$OS" = "_smartos" ]; then
+  local OS
+  OS=$1
+  local ARCH
+  ARCH=$2
+  local OPT
+  OPT=$3
+
+  if [ "_${OS}" = '_solaris' ] || [ "_${OS}" = '_smartos' ]; then
     ln -sf "${MOCKS_DIR}/isainfo_${ARCH}" ./isainfo
     if [ "_$OPT" != "_no_pkg_info" ]; then
       ln -sf "${MOCKS_DIR}/pkg_info_${ARCH}" ./pkg_info
@@ -42,10 +45,12 @@ setup_mock_arch() {
 
 # Cleans up the setup done by setup_mock_arch.
 cleanup_mock_arch() {
-  local OS=$1
-  local ARCH=$2
+  local OS
+  OS=$1
+  local ARCH
+  ARCH=$2
 
-  if [ "_$OS" = "_solaris" ] || [ "_$OS" = "_smartos" ]; then
+  if [ "_${OS}" = '_solaris' ] || [ "_${OS}" = '_smartos' ]; then
     rm -f ./isainfo
     rm -f ./pkg_info
   fi
@@ -57,17 +62,22 @@ cleanup_mock_arch() {
 # expected output $EXPECTED_OUTPUT with the actual output. Does nothing
 # and exits cleanly if they match, dies otherwise.
 run_test() {
-  local ARCH=$1
-  local OS=$2
-  local EXPECTED_OUTPUT=$3
-  local OPT=$4
-
-  setup_mock_arch $OS $ARCH $OPT
-  local OUTPUT="$(nvm_get_arch)"
-  cleanup_mock_arch $OS $ARCH
-  [ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] ||
-    die "nvm_get_arch for OS \"$OS\" and arch \"$ARCH\" with OPT \"$OPT\" did
-    not return \"$EXPECTED_OUTPUT\"; got \"$OUTPUT\""
+  local ARCH
+  ARCH=$1
+  local OS
+  OS=$2
+  local EXPECTED_OUTPUT
+  EXPECTED_OUTPUT=$3
+  local OPT
+  OPT=$4
+
+  setup_mock_arch "${OS}" "${ARCH}" "${OPT}"
+  local OUTPUT
+  OUTPUT="$(nvm_get_arch)"
+  cleanup_mock_arch "${OS}" "${ARCH}"
+  [ "_${OUTPUT}" = "_${EXPECTED_OUTPUT}" ] ||
+    die "nvm_get_arch for OS \"${OS}\" and arch \"${ARCH}\" with OPT \"${OPT}\" did
+    not return \"${EXPECTED_OUTPUT}\"; got \"${OUTPUT}\""
 }
 
 run_test x86 smartos x86