diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e148a2e..42aec7e 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -57,3 +57,30 @@ jobs:
         shell: bash
         run: |
           test/run.sh all
+
+  test-macos:
+
+    runs-on: macos-latest
+
+    continue-on-error: true
+
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE
+      - uses: actions/checkout@v3
+
+      - name: Install Shells & Shellcheck (macos only)
+        run: brew install bash shellcheck gnu-getopt coreutils findutils fd grep gnu-sed
+
+      - name: Prepare .zshenv
+        shell: bash
+        run: |
+          echo "export PATH=\"/usr/local/bin:\$PATH\"" >> "$HOME/.zshenv"
+          cat "$HOME/.zshenv"
+
+      - name: Run test-args2regex
+        shell: bash
+        run: zsh -i test/shtest-index-qc.sh
+
+      - name: Run All Tests
+        shell: bash
+        run: test/run.sh all
diff --git a/dstore b/dstore
index 460074d..22cde6a 100755
--- a/dstore
+++ b/dstore
@@ -20,6 +20,15 @@ qc_version=2.0
 # file is managed using the command 'dstore'.
 QC_DSTORE_INDEX=$QC_DIR/index.dstore
 
+if [ "$(uname)" == "Darwin" ]; then
+    PATH="/usr/local/opt/gnu-getopt/bin:$PATH"
+    PATH="/usr/local/opt/findutils/libexec/gnubin:$PATH"
+    PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"
+    PATH="/usr/local/opt/grep/libexec/gnubin:$PATH"
+    PATH="/usr/local/opt/gnu-sed/libexec/gnubin:$PATH"
+    export PATH
+fi
+
 show_help()
 {
     echo "Manually manage content of $QC_DSTORE_INDEX for usage with 'qc'."
diff --git a/qc-backend b/qc-backend
index 61455f1..fb9f8c1 100755
--- a/qc-backend
+++ b/qc-backend
@@ -9,6 +9,30 @@
 
 qc_version=2.0
 
+{
+    $BASH --version
+    echo "==================="
+    /usr/bin/env -vvv | grep -i PATH
+    echo "==================="
+    echo "BASH:                     '$BASH'"
+    echo "BASHOPTS:                 '$BASHOPTS'"
+    echo "BASHPID:                  '$BASHPID'"
+    echo "BASHRCSOURCED:            '$BASHRCSOURCED'"
+    echo "BASH_ARGC:                '$BASH_ARGC'"
+    echo "BASH_ARGV:                '$BASH_ARGV'"
+    echo "BASH_ARGV0:               '$BASH_ARGV0'"
+    echo "BASH_CMDS:                '$BASH_CMDS'"
+    echo "BASH_COMMAND:             '$BASH_COMMAND'"
+    echo "BASH_COMPLETION_VERSINFO: '$BASH_COMPLETION_VERSINFO'"
+    echo "BASH_LINENO:              '$BASH_LINENO'"
+    echo "BASH_LOADABLES_PATH:      '$BASH_LOADABLES_PATH'"
+    echo "BASH_REMATCH:             '$BASH_REMATCH'"
+    echo "BASH_SOURCE:              '$BASH_SOURCE'"
+    echo "BASH_SUBSHELL:            '$BASH_SUBSHELL'"
+    echo "BASH_VERSINFO:            '$BASH_VERSINFO'"
+    echo "BASH_VERSION:             '$BASH_VERSION'"
+} >&2
+
 # Directory for qc index files
 [ -z "${QC_DIR:-}" ] && QC_DIR=$HOME/.qc
 
@@ -16,6 +40,15 @@ qc_version=2.0
 # file is managed using the command 'dstore'.
 QC_DSTORE_INDEX=$QC_DIR/index.dstore
 
+if [ "$(uname)" = "Darwin" ]; then
+    PATH="/usr/local/opt/gnu-getopt/bin:$PATH"
+    PATH="/usr/local/opt/findutils/libexec/gnubin:$PATH"
+    PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"
+    PATH="/usr/local/opt/grep/libexec/gnubin:$PATH"
+    PATH="/usr/local/opt/gnu-sed/libexec/gnubin:$PATH"
+    export PATH
+fi
+
 # error on unset variable
 set -u
 
@@ -401,7 +434,7 @@ updateIndex()
     typeset PATH="$QC_DIR:$PATH"
     if command -v qc-build-index &>/dev/null; then
         echo "Updating index ..."
-        typeset -a ARGS
+        typeset -a ARGS=()
         typeset d
         for d in "$@"; do
             if [ "$d" = "-E" ]; then
diff --git a/qc-build-index b/qc-build-index
index fcce4e1..d36d9ab 100755
--- a/qc-build-index
+++ b/qc-build-index
@@ -24,6 +24,26 @@ script_dir="$(cd "$(dirname "$0")" && pwd)" || exit 1
 script_name="$(basename "$0")"
 script_file="$script_dir/$script_name"
 
+{
+    echo "BASH:                     '$BASH'"
+    echo "BASHOPTS:                 '$BASHOPTS'"
+    echo "BASHPID:                  '$BASHPID'"
+    echo "BASHRCSOURCED:            '$BASHRCSOURCED'"
+    echo "BASH_ARGC:                '$BASH_ARGC'"
+    echo "BASH_ARGV:                '$BASH_ARGV'"
+    echo "BASH_ARGV0:               '$BASH_ARGV0'"
+    echo "BASH_CMDS:                '$BASH_CMDS'"
+    echo "BASH_COMMAND:             '$BASH_COMMAND'"
+    echo "BASH_COMPLETION_VERSINFO: '$BASH_COMPLETION_VERSINFO'"
+    echo "BASH_LINENO:              '$BASH_LINENO'"
+    echo "BASH_LOADABLES_PATH:      '$BASH_LOADABLES_PATH'"
+    echo "BASH_REMATCH:             '$BASH_REMATCH'"
+    echo "BASH_SOURCE:              '$BASH_SOURCE'"
+    echo "BASH_SUBSHELL:            '$BASH_SUBSHELL'"
+    echo "BASH_VERSINFO:            '$BASH_VERSINFO'"
+    echo "BASH_VERSION:             '$BASH_VERSION'"
+} >&2
+
 set -u
 
 qc_version=2.0
@@ -35,6 +55,15 @@ CFG="$QC_DIR/qc-index.cfg"
 
 typeset -a TMP_FILES=()
 
+if [ "$(uname)" = "Darwin" ]; then
+    PATH="/usr/local/opt/gnu-getopt/bin:$PATH"
+    PATH="/usr/local/opt/findutils/libexec/gnubin:$PATH"
+    PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"
+    PATH="/usr/local/opt/grep/libexec/gnubin:$PATH"
+    PATH="/usr/local/opt/gnu-sed/libexec/gnubin:$PATH"
+    export PATH
+fi
+
 # Detect the fd executable name. On Debian/Ubuntu the executable is named
 # 'fdfind' to prevent a name clash with another tool (package fdclone).
 FD_CMD="$(command -v fdfind)"
diff --git a/test/defines.shinc b/test/defines.shinc
index 76112f6..0910ebf 100644
--- a/test/defines.shinc
+++ b/test/defines.shinc
@@ -4,6 +4,15 @@ export __QC_TEST__=true
 
 set -u
 
+if [ "$(uname)" = "Darwin" ]; then
+    PATH="/usr/local/opt/gnu-getopt/bin:$PATH"
+    PATH="/usr/local/opt/findutils/libexec/gnubin:$PATH"
+    PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"
+    PATH="/usr/local/opt/grep/libexec/gnubin:$PATH"
+    PATH="/usr/local/opt/gnu-sed/libexec/gnubin:$PATH"
+    export PATH
+fi
+
 if [ -z "${script_dir:-}" ]; then
     echo ""
     echo "ERROR: required variable \$script_dir\" is not set"
@@ -126,6 +135,10 @@ trap "onExit" EXIT
 
 TEST_DIRECTORY="/tmp/qc-testDirectory"
 [ -d "$TEST_DIRECTORY" ] && rm -rf "$TEST_DIRECTORY"
+
+mkdir -p "$TEST_DIRECTORY"
+TEST_DIRECTORY="$(readlink -e "/tmp/qc-testDirectory")"
+
 mkdir -p "$TEST_DIRECTORY/.qc"
 export QC_DIR="$TEST_DIRECTORY"/.qc
 
diff --git a/test/shtest-index-qc.sh b/test/shtest-index-qc.sh
index 330c92b..aded4ba 100755
--- a/test/shtest-index-qc.sh
+++ b/test/shtest-index-qc.sh
@@ -1,4 +1,3 @@
-#!/bin/sh
 #
 # FILE: shtest-index-qc.sh
 #
@@ -96,6 +95,9 @@ if [ $expected_cnt -eq "$(wc -l < "$TEST_DIRECTORY/.qc/test.index")" ]; then
     OK
 else
     ERROR
+    echo "------------------"
+    cat "$TEST_DIRECTORY/.qc/test.index"
+    echo "------------------"
 fi
 
 printf "test.index.hidden exists"
@@ -118,6 +120,9 @@ if [ $expected_cnt -eq "$(wc -l < "$TEST_DIRECTORY/.qc/test.index.hidden")" ]; t
     OK
 else
     ERROR
+    echo "------------------"
+    cat "$TEST_DIRECTORY/.qc/test.index"
+    echo "------------------"
 fi
 
 printf "index.dstore exists"
diff --git a/test/test-invopt.sh b/test/test-invopt.sh
index d1c59ff..beb30f9 100755
--- a/test/test-invopt.sh
+++ b/test/test-invopt.sh
@@ -18,60 +18,23 @@ set -u
 # shellcheck source=./defines.shinc
 . "${script_dir}/defines.shinc"
 
-#
-# Adjust to different versions of /bin/getopt
-# Maybe it is a bad idea to check for this error messages
-#
-if getopt "o" -D 2>&1 | grep -q invalid; then
-    # "newer version e.g 2.37.4
-    invShortOpt="invalid option -- '%c'"
-    invLongOpt="unrecognized option '--%s'"
-else
-    invShortOpt="unknown option -- %c"
-    invLongOpt="unknown option -- %s"
-fi
-
-
-
+check_inv_opt_detected()
+{
+    printf "%s " "$@"
+    if "$@" 2>&1 | grep -q "Try '[^ ]* --help' for more information."; then
+        OK
+    else
+        ERROR
+    fi
+}
 
 startTest "Invalid option detection"
 
-printf "qc -Z"
-if qc-backend -Z 2>&1 | grep -q "$(printf "$invShortOpt" Z)"; then
-    OK
-else
-    ERROR
-fi
-printf "dstore -Z"
-if dstore -Z 2>&1 | grep -q "$(printf "$invShortOpt" Z)"; then
-    OK
-else
-    ERROR
-fi
-printf "qc-build-index -Z"
-if qc-build-index -Z 2>&1 | grep -q "$(printf "$invShortOpt" Z)"; then
-    OK
-else
-    ERROR
-fi
-
-printf "qc --wrong"
-if qc-backend --wrong 2>&1 | grep -q "$(printf "$invLongOpt" wrong)"; then
-    OK
-else
-    ERROR
-fi
-printf "dstore --wrong"
-if dstore --wrong 2>&1 | grep -q "$(printf "$invLongOpt" wrong)"; then
-    OK
-else
-    ERROR
-fi
-printf "qc-build-index --wrong"
-if qc-build-index --wrong 2>&1 | grep -q "$(printf "$invLongOpt" wrong)"; then
-    OK
-else
-    ERROR
-fi
+check_inv_opt_detected qc-backend -Z
+check_inv_opt_detected dstore -Z
+check_inv_opt_detected qc-build-index -Z
+check_inv_opt_detected qc-backend --wrong
+check_inv_opt_detected dstore --wrong
+check_inv_opt_detected qc-build-index --wrong
 
 endTest