Configure post-install script to only operate when platform installed on Linux machine

post_install.sh

@@ -9,25 +9,31 @@ SUBSYSTEMS=="usb", ATTRS{idVendor}=="2341", MODE:="0666"
 EOF
 }
 
-if [ "$EUID" -ne 0 ]; then
-  if [ -e "${PWD}/post_install.sh" ]; then
-    echo
-    echo "You might need to configure permissions for uploading."
-    echo "To do so, run the following command from the terminal:"
-    echo "sudo \"${PWD}/post_install.sh\""
-    echo
-  else
-    # Script was executed from another path. It is assumed this will only occur when user is executing script directly.
-    # So it is not necessary to provide the command line.
-    echo "Please run as root"
+OS="$(uname -s)"
+case "$OS" in
+Linux*)
+  if [ "$EUID" -ne 0 ]; then
+    if [ -e "${PWD}/post_install.sh" ]; then
+      echo
+      echo "You might need to configure permissions for uploading."
+      echo "To do so, run the following command from the terminal:"
+      echo "sudo \"${PWD}/post_install.sh\""
+      echo
+    else
+      # Script was executed from another path. It is assumed this will only occur when user is executing script directly.
+      # So it is not necessary to provide the command line.
+      echo "Please run as root"
+    fi
+
+    exit
   fi
 
-  exit
-fi
+  arduino_renesas_core_rules > /etc/udev/rules.d/60-arduino-renesas.rules
 
-arduino_renesas_core_rules > /etc/udev/rules.d/60-arduino-renesas.rules
+  # reload udev rules
+  echo "Reload rules..."
+  udevadm trigger
+  udevadm control --reload-rules
 
-# reload udev rules
-echo "Reload rules..."
-udevadm trigger
-udevadm control --reload-rules
+  ;;
+esac