diff --git a/app/run.sh b/app/run.sh
index 634c852..dcadc70 100644
--- a/app/run.sh
+++ b/app/run.sh
@@ -13,76 +13,84 @@ index_html_bak="${index_html}.bak"
 start() {
   echo "Starting..."
 
-  # Copy mod_store
-  if [[ ! -d "$mod_store_dir" ]]; then
-    echo "Creating directory ${mod_store_dir}"
-    mkdir -p "$mod_store_dir"
-    cp -r /app/mod/* "$mod_store_dir"
-    echo -e "Delete this folder and it will be recreated when the new version of the container is started.\n删除本文件夹，新版本容器启动时将重建。" >> "${mod_store_dir}/Get_New_MODs.txt"
-  fi
+  # Confirm environment
+  if [[ -f "$index_html" ]]; then
+    echo "Running on: CasaOS"
 
-  # Process mapping directory
-  for dir in "$mod_dir" "$icon_dir"; do
-    #Creating directory
-    if [[ ! -d "$dir" ]]; then
-      echo "Creating directory ${dir}"
-      mkdir -p "$dir"
-    fi
-    # Creating symlink
-    symlink_dir="${www_dir}/${dir##*/}"
-    if [[ ! -d "$symlink_dir" ]]; then
-      echo "Creating symlink ${dir} to ${symlink_dir}"
-      ln -s "$dir" "$symlink_dir"
+    # Copy mod_store
+    if [[ ! -d "$mod_store_dir" ]]; then
+      echo "Creating directory ${mod_store_dir}"
+      mkdir -p "$mod_store_dir"
+      cp -r /app/mod/* "$mod_store_dir"
+      echo -e "Delete this folder and it will be recreated when the new version of the container is started.\n删除本文件夹，新版本容器启动时将重建。" >>"${mod_store_dir}/Get_New_MODs.txt"
     fi
-  done
 
-  # Create symlink for www_dir in config_dir
-  # www_link="${config_dir}/www"
-  # if [[ ! -d "$www_link" ]]; then
-  #   echo "Creating symlink ${www_dir} to ${www_link}"
-  #   ln -s "$www_dir" "$www_link"
-  # fi
+    # Process mapping directory
+    for dir in "$mod_dir" "$icon_dir"; do
+      #Creating directory
+      if [[ ! -d "$dir" ]]; then
+        echo "Creating directory ${dir}"
+        mkdir -p "$dir"
+      fi
+      # Creating symlink
+      symlink_dir="${www_dir}/${dir##*/}"
+      if [[ ! -d "$symlink_dir" ]]; then
+        echo "Creating symlink ${dir} to ${symlink_dir}"
+        ln -s "$dir" "$symlink_dir"
+      fi
+    done
 
-  # Backup index.html
-  if [[ ! -f "$index_html_bak" ]]; then
-    cp "$index_html" "$index_html_bak"
-    echo "Backup index.html"
-  else
-    cp "$index_html_bak" "$index_html"
-  fi
+    # Create symlink for www_dir in config_dir
+    # www_link="${config_dir}/www"
+    # if [[ ! -d "$www_link" ]]; then
+    #   echo "Creating symlink ${www_dir} to ${www_link}"
+    #   ln -s "$www_dir" "$www_link"
+    # fi
+
+    # Backup index.html
+    if [[ ! -f "$index_html_bak" ]]; then
+      cp "$index_html" "$index_html_bak"
+      echo "Backup index.html"
+    else
+      cp "$index_html_bak" "$index_html"
+    fi
 
-  # Build tags for mods
-  js_tags=""
-  css_tags=""
-  for mod_path in "$mod_dir"/*; do
-    mod_js_path="${mod_path}/mod.js"
-    mod_css_path="${mod_path}/mod.css"
-    if [[ -f "$mod_js_path" ]]; then
-      echo "Reading ${mod_js_path}"
-      js_tags+="<script type=\"text/javascript\" src=\"mod/${mod_path##*/}/mod.js\"></script>\n"
+    # Build tags for mods
+    js_tags=""
+    css_tags=""
+    for mod_path in "$mod_dir"/*; do
+      mod_js_path="${mod_path}/mod.js"
+      mod_css_path="${mod_path}/mod.css"
+      if [[ -f "$mod_js_path" ]]; then
+        echo "Reading ${mod_js_path}"
+        js_tags+="<script type=\"text/javascript\" src=\"mod/${mod_path##*/}/mod.js\"></script>\n"
+      fi
+      if [[ -f "$mod_css_path" ]]; then
+        echo "Reading ${mod_css_path}"
+        css_tags+="<link href=\"/mod/${mod_path##*/}/mod.css\" rel=\"stylesheet\">\n"
+      fi
+    done
+    if [[ -z "$js_tags" ]]; then
+      js_tags="\n<!-- CasaMOD is loaded, but no js found -->\n"
+    else
+      js_tags="\n<!-- CasaMOD js -->\n${js_tags}"
     fi
-    if [[ -f "$mod_css_path" ]]; then
-      echo "Reading ${mod_css_path}"
-      css_tags+="<link href=\"/mod/${mod_path##*/}/mod.css\" rel=\"stylesheet\">\n"
+    #echo "$js_tags"
+    if [[ -z "$css_tags" ]]; then
+      css_tags="\n<!-- CasaMOD is loaded, but no css found -->\n"
+    else
+      css_tags="\n<!-- CasaMOD css -->\n${css_tags}"
     fi
-  done
-  if [[ -z "$js_tags" ]]; then
-    js_tags="\n<!-- CasaMOD is loaded, but no js found -->\n"
-  else
-    js_tags="\n<!-- CasaMOD js -->\n${js_tags}"
-  fi
-  #echo "$js_tags"
-  if [[ -z "$css_tags" ]]; then
-    css_tags="\n<!-- CasaMOD is loaded, but no css found -->\n"
+    #echo "$css_tags"
+
+    # Modify index.html
+    sed -i "s|<title>|${css_tags}<title>|" "$index_html"
+    sed -i "s|<\/body>|${js_tags}<\/body>|" "$index_html"
+    echo "Modified index.html"
+
   else
-    css_tags="\n<!-- CasaMOD css -->\n${css_tags}"
+    echo "Not supported on current systems."
   fi
-  #echo "$css_tags"
-
-  # Modify index.html
-  sed -i "s|<title>|${css_tags}<title>|" "$index_html"
-  sed -i "s|<\/body>|${js_tags}<\/body>|" "$index_html"
-  echo "Modified index.html"
 
   echo "Keep Running..."
   while true; do