diff --git a/.gitattributes b/.gitattributes
index dfe077042..31a751708 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,4 @@
+# Make sure that the shell files use LF
+FCL/src/main/assets/fcl_shell/** text=auto eol=lf
 # Auto detect text files and perform LF normalization
 * text=auto
diff --git a/FCL/build.gradle b/FCL/build.gradle
index 7750f1bbd..963d9b31f 100644
--- a/FCL/build.gradle
+++ b/FCL/build.gradle
@@ -48,6 +48,9 @@ android {
         versionName "1.2.0.2"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        aaptOptions{
+            ignoreAssets "!.svn:!.git:<dir>_*:!CVS:!thumbs.db:!picasa.ini:!*.scc:*~"
+        }
     }
 
     buildTypes {
diff --git a/FCL/src/main/assets/fcl_shell/.bashrc b/FCL/src/main/assets/fcl_shell/.bashrc
new file mode 100644
index 000000000..56ddc0a2e
--- /dev/null
+++ b/FCL/src/main/assets/fcl_shell/.bashrc
@@ -0,0 +1,6 @@
+#!/system/bin/sh
+export FCL_PATH_SHELL="$(dirname "$(readlink -f "${0}")")/cmd_tools"
+export FCL_PATH_INTERNAL="${HOME}"
+chmod +x "${FCL_PATH_SHELL}/bin/"*
+export PATH="${FCL_PATH_SHELL}/bin":${PATH}
+. ${FCL_PATH_SHELL}/init.sh
\ No newline at end of file
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/bin/hello b/FCL/src/main/assets/fcl_shell/cmd_tools/bin/hello
new file mode 100644
index 000000000..8cff74f73
--- /dev/null
+++ b/FCL/src/main/assets/fcl_shell/cmd_tools/bin/hello
@@ -0,0 +1,7 @@
+#!/system/bin/sh
+${fclshell_load_lang} hello
+if [[ "$1" == "-h" || "$1" == "--help" ]]; then
+  echo "${lang_hello_help}"
+else
+  echo "${lang_hello_welcome}"
+fi
\ No newline at end of file
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/init.sh b/FCL/src/main/assets/fcl_shell/cmd_tools/init.sh
new file mode 100644
index 000000000..93cf02c64
--- /dev/null
+++ b/FCL/src/main/assets/fcl_shell/cmd_tools/init.sh
@@ -0,0 +1,5 @@
+#!/system/bin/sh
+. "${FCL_PATH_SHELL}/lib/lang/init.sh"
+export fclshell_load_lang=". ${FCL_PATH_SHELL}/lib/lang/load.sh"
+. "${FCL_PATH_SHELL}/lib/hidden_theme/init.sh"
+sh "${FCL_PATH_SHELL}/bin/hello"
\ No newline at end of file
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/lib/hidden_theme/init.sh b/FCL/src/main/assets/fcl_shell/cmd_tools/lib/hidden_theme/init.sh
new file mode 100644
index 000000000..a99c5cc94
--- /dev/null
+++ b/FCL/src/main/assets/fcl_shell/cmd_tools/lib/hidden_theme/init.sh
@@ -0,0 +1,2 @@
+#!/system/bin/sh
+alias EnableHiddenTheme="sh \"${FCL_PATH_SHELL}/lib/hidden_theme/set.sh\""
\ No newline at end of file
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/lib/hidden_theme/set.sh b/FCL/src/main/assets/fcl_shell/cmd_tools/lib/hidden_theme/set.sh
new file mode 100644
index 000000000..b549e4b3c
--- /dev/null
+++ b/FCL/src/main/assets/fcl_shell/cmd_tools/lib/hidden_theme/set.sh
@@ -0,0 +1,23 @@
+#!/system/bin/sh
+${fclshell_load_lang} hidden_theme
+
+. "${FCL_PATH_SHELL}/lib/launcher_theme/load.sh"
+export FCL_CONF_THEME_THEME_COLOR="2136981471"
+export FCL_CONF_THEME_THEME_COLOR2="-32897"
+export FCL_CONF_THEME_ANIMATION_SPEED="8"
+export FCL_CONF_THEME_CLOSE_SKIN_MODEL="true"
+export FCL_CONF_THEME_MODIFIED="true"
+. "${FCL_PATH_SHELL}/lib/launcher_theme/set.sh"
+. "${FCL_PATH_SHELL}/lib/launcher_theme/unload.sh"
+
+rm -rf "${FCL_PATH_INTERNAL}/files/background" >"/dev/null" 2>&1
+rm -rf "${FCL_PATH_INTERNAL}/files/cursor.png" >"/dev/null" 2>&1
+rm -rf "${FCL_PATH_INTERNAL}/files/menu_icon.png" >"/dev/null" 2>&1
+rm -rf "${FCL_PATH_INTERNAL}/files/menu_icon.gif" >"/dev/null" 2>&1
+mkdir -p "${FCL_PATH_INTERNAL}/files/background"
+cp -f "${FCL_PATH_SHELL}/res/hidden_theme/background.png" "${FCL_PATH_INTERNAL}/files/background/lt.png"
+cp -f "${FCL_PATH_SHELL}/res/hidden_theme/background.png" "${FCL_PATH_INTERNAL}/files/background/dk.png"
+cp -f "${FCL_PATH_SHELL}/res/hidden_theme/cursor.png" "${FCL_PATH_INTERNAL}/files/cursor.png"
+cp -f "${FCL_PATH_SHELL}/res/hidden_theme/menu_icon.gif" "${FCL_PATH_INTERNAL}/files/menu_icon.gif"
+
+echo "${lang_hidden_theme_enabled}"
\ No newline at end of file
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/lib/lang/init.sh b/FCL/src/main/assets/fcl_shell/cmd_tools/lib/lang/init.sh
new file mode 100644
index 000000000..f045d9e3a
--- /dev/null
+++ b/FCL/src/main/assets/fcl_shell/cmd_tools/lib/lang/init.sh
@@ -0,0 +1,26 @@
+#!/system/bin/sh
+if [[ -f "${FCL_PATH_INTERNAL}/shared_prefs/launcher.xml" ]]; then
+  fclLang="$(cat "${FCL_PATH_INTERNAL}/shared_prefs/launcher.xml" | grep "name=\"lang\"")"
+fi
+if [[ "${fclLang}" != "" ]]; then
+  fclLang=${fclLang/#    <int name=\"lang\" value=\"/}
+  fclLang=${fclLang/%\" \/>/}
+  if [[ "${fclLang}" == "0" ]]; then
+    FCL_CONF_LANG="$(getprop persist.sys.locale )"
+    FCL_CONF_LANG="${FCL_CONF_LANG:0:2}"
+  elif [[ "${fclLang}" == "1" ]]; then
+    FCL_CONF_LANG="en"
+  elif [[ "${fclLang}" == "2" ]]; then
+    FCL_CONF_LANG="zh"
+  elif [[ "${fclLang}" == "3" ]]; then
+    FCL_CONF_LANG="ru"
+  elif [[ "${fclLang}" == "4" ]]; then
+    FCL_CONF_LANG="pt"
+  elif [[ "${fclLang}" == "3" ]]; then
+    FCL_CONF_LANG="fa"
+  fi
+else
+  FCL_CONF_LANG="$(getprop persist.sys.locale )"
+  FCL_CONF_LANG="${FCL_CONF_LANG:0:2}"
+fi
+export FCL_CONF_LANG="${FCL_CONF_LANG}"
\ No newline at end of file
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/lib/lang/load.sh b/FCL/src/main/assets/fcl_shell/cmd_tools/lib/lang/load.sh
new file mode 100644
index 000000000..8712d662d
--- /dev/null
+++ b/FCL/src/main/assets/fcl_shell/cmd_tools/lib/lang/load.sh
@@ -0,0 +1,30 @@
+#!/system/bin/sh
+target="$1"
+fallback="$2"
+lang="${FCL_CONF_LANG}"
+lang_res="${FCL_PATH_SHELL}/res/lang"
+
+if [[ "${fallback}" == "" ]]; then
+  fallback="en"
+fi
+
+if [[ $1 == "" ]]; then
+  if [[ -f "${lang_res}/${lang}.sh" ]]; then
+    . "${lang_res}/${lang}.sh"
+  else
+    . "${lang_res}/${fallback}.sh"
+  fi
+elif [[ -d "${lang_res}/${target}" ]]; then
+  if [[ -f "${lang_res}/${target}/${lang}.sh" ]]; then
+    . "${lang_res}/${target}/${lang}.sh"
+  else
+    . "${lang_res}/${target}/${fallback}.sh"
+  fi
+else
+  echo "error: invalid argument"
+fi
+
+unset target
+unset fallback
+unset lang
+unset lang_res
\ No newline at end of file
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/lib/launcher_theme/load.sh b/FCL/src/main/assets/fcl_shell/cmd_tools/lib/launcher_theme/load.sh
new file mode 100644
index 000000000..81110cbb7
--- /dev/null
+++ b/FCL/src/main/assets/fcl_shell/cmd_tools/lib/launcher_theme/load.sh
@@ -0,0 +1,67 @@
+#!/system/bin/sh
+if [[ -f "${FCL_PATH_INTERNAL}/shared_prefs/theme.xml" ]]; then
+  theme_data="$(cat "${FCL_PATH_INTERNAL}/shared_prefs/theme.xml")"
+fi
+
+theme_color="$(echo -n "${theme_data}" | grep "<int name=\"theme_color\"")"
+if [[ "${theme_color}" != "" ]]; then
+  theme_color=${theme_color/#    <int name=\"theme_color\" value=\"/}
+  theme_color=${theme_color/%\" \/>/}
+else
+  theme_color=""
+fi
+
+theme_color2="$(echo -n "${theme_data}" | grep "<int name=\"theme_color2\"")"
+if [[ "${theme_color2}" != "" ]]; then
+  theme_color2=${theme_color2/#    <int name=\"theme_color2\" value=\"/}
+  theme_color2=${theme_color2/%\" \/>/}
+else
+  theme_color2=""
+fi
+
+animation_speed="$(echo -n "${theme_data}" | grep "<int name=\"animation_speed\"")"
+if [[ "${animation_speed}" != "" ]]; then
+  animation_speed=${animation_speed/#    <int name=\"animation_speed\" value=\"/}
+  animation_speed=${animation_speed/%\" \/>/}
+else
+  animation_speed=""
+fi
+
+close_skin_model="$(echo -n "${theme_data}" | grep "<boolean name=\"close_skin_model\"")"
+if [[ "${close_skin_model}" != "" ]]; then
+  close_skin_model=${close_skin_model/#    <boolean name=\"close_skin_model\" value=\"/}
+  close_skin_model=${close_skin_model/%\" \/>/}
+else
+  close_skin_model=""
+fi
+
+fullscreen="$(echo -n "${theme_data}" | grep "<boolean name=\"fullscreen\"")"
+if [[ "${fullscreen}" != "" ]]; then
+  fullscreen=${fullscreen/#    <boolean name=\"fullscreen\" value=\"/}
+  fullscreen=${fullscreen/%\" \/>/}
+else
+  fullscreen=""
+fi
+
+modified="$(echo -n "${theme_data}" | grep "<boolean name=\"modified\"")"
+if [[ "${modified}" != "" ]]; then
+  modified=${modified/#    <boolean name=\"modified\" value=\"/}
+  modified=${modified/%\" \/>/}
+else
+  modified=""
+fi
+
+export FCL_CONF_THEME_THEME_COLOR="${theme_color}"
+export FCL_CONF_THEME_THEME_COLOR2="${theme_color2}"
+export FCL_CONF_THEME_ANIMATION_SPEED="${animation_speed}"
+export FCL_CONF_THEME_CLOSE_SKIN_MODEL="${close_skin_model}"
+export FCL_CONF_THEME_FULLSCREEN="${fullscreen}"
+export FCL_CONF_THEME_MODIFIED="${modified}"
+
+unset theme_data
+unset theme_color
+unset theme_color2
+unset animation_speed
+unset close_skin_model
+unset fullscreen
+unset modified
\ No newline at end of file
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/lib/launcher_theme/set.sh b/FCL/src/main/assets/fcl_shell/cmd_tools/lib/launcher_theme/set.sh
new file mode 100644
index 000000000..82295fb86
--- /dev/null
+++ b/FCL/src/main/assets/fcl_shell/cmd_tools/lib/launcher_theme/set.sh
@@ -0,0 +1,69 @@
+#!/system/bin/sh
+theme_file="${FCL_PATH_INTERNAL}/shared_prefs/theme.xml"
+
+theme_begin="<?xml version='1.0' encoding='utf-8' standalone='yes' ?>\n<map>\n"
+int_item="    <int name=\""
+boolean_item="    <boolean name=\""
+value_begin="\" value=\""
+value_end="\" />\n"
+theme_end="</map>\n"
+
+echo -en "${theme_begin}" >"${theme_file}"
+
+if [[ "${FCL_CONF_THEME_THEME_COLOR}" != "" ]]; then
+  echo -en "${int_item}" >>"${theme_file}"
+  echo -en "theme_color" >>"${theme_file}"
+  echo -en "${value_begin}" >>"${theme_file}"
+  echo -en "${FCL_CONF_THEME_THEME_COLOR}" >>"${theme_file}"
+  echo -en "${value_end}" >>"${theme_file}"
+fi
+
+if [[ "${FCL_CONF_THEME_THEME_COLOR2}" != "" ]]; then
+  echo -en "${int_item}" >>"${theme_file}"
+  echo -en "theme_color2" >>"${theme_file}"
+  echo -en "${value_begin}" >>"${theme_file}"
+  echo -en "${FCL_CONF_THEME_THEME_COLOR2}" >>"${theme_file}"
+  echo -en "${value_end}" >>"${theme_file}"
+fi
+
+if [[ "${FCL_CONF_THEME_ANIMATION_SPEED}" != "" ]]; then
+  echo -en "${int_item}" >>"${theme_file}"
+  echo -en "animation_speed" >>"${theme_file}"
+  echo -en "${value_begin}" >>"${theme_file}"
+  echo -en "${FCL_CONF_THEME_ANIMATION_SPEED}" >>"${theme_file}"
+  echo -en "${value_end}" >>"${theme_file}"
+fi
+
+if [[ "${FCL_CONF_THEME_CLOSE_SKIN_MODEL}" != "" ]]; then
+  echo -en "${boolean_item}" >>"${theme_file}"
+  echo -en "close_skin_model" >>"${theme_file}"
+  echo -en "${value_begin}" >>"${theme_file}"
+  echo -en "${FCL_CONF_THEME_CLOSE_SKIN_MODEL}" >>"${theme_file}"
+  echo -en "${value_end}" >>"${theme_file}"
+fi
+
+if [[ "${FCL_CONF_THEME_FULLSCREEN}" != "" ]]; then
+  echo -en "${boolean_item}" >>"${theme_file}"
+  echo -en "fullscreen" >>"${theme_file}"
+  echo -en "${value_begin}" >>"${theme_file}"
+  echo -en "${FCL_CONF_THEME_FULLSCREEN}" >>"${theme_file}"
+  echo -en "${value_end}" >>"${theme_file}"
+fi
+
+if [[ "${FCL_CONF_THEME_MODIFIED}" != "" ]]; then
+  echo -en "${boolean_item}" >>"${theme_file}"
+  echo -en "modified" >>"${theme_file}"
+  echo -en "${value_begin}" >>"${theme_file}"
+  echo -en "${FCL_CONF_THEME_MODIFIED}" >>"${theme_file}"
+  echo -en "${value_end}" >>"${theme_file}"
+fi
+
+echo -en "${theme_end}" >>"${theme_file}"
+
+unset theme_file
+unset theme_begin
+unset int_item
+unset boolean_item
+unset value_begin
+unset value_end
+unset theme_end
\ No newline at end of file
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/lib/launcher_theme/unload.sh b/FCL/src/main/assets/fcl_shell/cmd_tools/lib/launcher_theme/unload.sh
new file mode 100644
index 000000000..6bd915441
--- /dev/null
+++ b/FCL/src/main/assets/fcl_shell/cmd_tools/lib/launcher_theme/unload.sh
@@ -0,0 +1,8 @@
+#!/system/bin/sh
+
+unset FCL_CONF_THEME_THEME_COLOR
+unset FCL_CONF_THEME_THEME_COLOR2
+unset FCL_CONF_THEME_ANIMATION_SPEED
+unset FCL_CONF_THEME_CLOSE_SKIN_MODEL
+unset FCL_CONF_THEME_FULLSCREEN
+unset FCL_CONF_THEME_MODIFIED
\ No newline at end of file
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/res/hidden_theme/.nomedia b/FCL/src/main/assets/fcl_shell/cmd_tools/res/hidden_theme/.nomedia
new file mode 100644
index 000000000..e69de29bb
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/res/hidden_theme/background.png b/FCL/src/main/assets/fcl_shell/cmd_tools/res/hidden_theme/background.png
new file mode 100644
index 000000000..20b11be7d
Binary files /dev/null and b/FCL/src/main/assets/fcl_shell/cmd_tools/res/hidden_theme/background.png differ
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/res/hidden_theme/cursor.png b/FCL/src/main/assets/fcl_shell/cmd_tools/res/hidden_theme/cursor.png
new file mode 100644
index 000000000..27f67df85
Binary files /dev/null and b/FCL/src/main/assets/fcl_shell/cmd_tools/res/hidden_theme/cursor.png differ
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/res/hidden_theme/menu_icon.gif b/FCL/src/main/assets/fcl_shell/cmd_tools/res/hidden_theme/menu_icon.gif
new file mode 100644
index 000000000..a57707ca7
Binary files /dev/null and b/FCL/src/main/assets/fcl_shell/cmd_tools/res/hidden_theme/menu_icon.gif differ
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/res/lang/hello/en.sh b/FCL/src/main/assets/fcl_shell/cmd_tools/res/lang/hello/en.sh
new file mode 100644
index 000000000..10ee5e7f8
--- /dev/null
+++ b/FCL/src/main/assets/fcl_shell/cmd_tools/res/lang/hello/en.sh
@@ -0,0 +1,10 @@
+#!/system/bin/sh
+lang_hello_help="Usage: hello [Args]\n\
+Print a friendly greeting.\n\
+Args:\n\
+    (without args or unknown args)\n\
+        print the greeting and exit\n\
+    -h, --help\n\
+        display this help and exit"
+lang_hello_welcome="Welcome to use Fold Craft Launcher!\n\
+Here is the shell command line!"
\ No newline at end of file
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/res/lang/hello/zh.sh b/FCL/src/main/assets/fcl_shell/cmd_tools/res/lang/hello/zh.sh
new file mode 100644
index 000000000..b7a833915
--- /dev/null
+++ b/FCL/src/main/assets/fcl_shell/cmd_tools/res/lang/hello/zh.sh
@@ -0,0 +1,10 @@
+#!/system/bin/sh
+lang_hello_help="用法：hello [Args]\n\
+输出友好的问候语。\n\
+参数：\n\
+    (无参数或未知参数)\n\
+        输出问候语，然后退出\n\
+    -h, --help\n\
+        显示该帮助信息，然后退出"
+lang_hello_welcome="欢迎使用 FCL 启动器！\n\
+这里是 FCL Shell 命令行！"
\ No newline at end of file
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/res/lang/hidden_theme/en.sh b/FCL/src/main/assets/fcl_shell/cmd_tools/res/lang/hidden_theme/en.sh
new file mode 100644
index 000000000..9b7622129
--- /dev/null
+++ b/FCL/src/main/assets/fcl_shell/cmd_tools/res/lang/hidden_theme/en.sh
@@ -0,0 +1,2 @@
+#!/system/bin/sh
+lang_hidden_theme_enabled="Enabled, please restart the launcher immediately."
\ No newline at end of file
diff --git a/FCL/src/main/assets/fcl_shell/cmd_tools/res/lang/hidden_theme/zh.sh b/FCL/src/main/assets/fcl_shell/cmd_tools/res/lang/hidden_theme/zh.sh
new file mode 100644
index 000000000..60abf3d3a
--- /dev/null
+++ b/FCL/src/main/assets/fcl_shell/cmd_tools/res/lang/hidden_theme/zh.sh
@@ -0,0 +1,2 @@
+#!/system/bin/sh
+lang_hidden_theme_enabled="已启用，请立即重启启动器。"
\ No newline at end of file
diff --git a/FCL/src/main/java/com/tungsten/fcl/activity/ShellActivity.java b/FCL/src/main/java/com/tungsten/fcl/activity/ShellActivity.java
index d9ea59252..38d59b32e 100644
--- a/FCL/src/main/java/com/tungsten/fcl/activity/ShellActivity.java
+++ b/FCL/src/main/java/com/tungsten/fcl/activity/ShellActivity.java
@@ -13,6 +13,7 @@
 import com.tungsten.fcl.R;
 import com.tungsten.fcl.control.view.LogWindow;
 import com.tungsten.fcl.util.ShellUtil;
+import com.tungsten.fcl.util.RuntimeUtils;
 import com.tungsten.fclauncher.utils.FCLPath;
 import com.tungsten.fcllibrary.component.FCLActivity;
 import com.tungsten.fcllibrary.component.theme.Theme;
@@ -33,10 +34,19 @@ protected void onCreate(@Nullable Bundle savedInstanceState) {
         setContentView(R.layout.activity_shell);
         logWindow = findViewById(R.id.shell_log_window);
         editText = findViewById(R.id.shell_input);
-        appendLog("Welcome to use Fold Craft Launcher!\n");
-        appendLog("Here is the shell command line!\n");
-        shellUtil = new ShellUtil(new File(FCLPath.FILES_DIR).getParent(), output -> runOnUiThread(() -> appendLog("\t" + output + "\n")));
+        String shellHome = new File(FCLPath.FILES_DIR).getParent();
+        if ( !(new File(shellHome, ".bashrc").exists()) ) {
+            try {
+                RuntimeUtils.copyAssets(this, "fcl_shell", shellHome);
+            } catch (Exception e) {
+                logWindow.append(e.toString() + "\n");
+            }
+        }
+        shellUtil = new ShellUtil(shellHome, output -> runOnUiThread(() -> {
+            appendLog("\t" + output + "\n");
+        }));
         shellUtil.start();
+        shellUtil.append(". \"./.bashrc\"\n");
         editText.addTextChangedListener(new TextWatcher() {
             @Override
             public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
@@ -54,7 +64,7 @@ public void afterTextChanged(Editable editable) {
                 if (cmd.endsWith("\n")) {
                     appendLog("->" + cmd);
                     editText.setText("");
-                    if (cmd.contains("clear")) {
+                    if (cmd.equals("clear\n")) {
                         logWindow.setText("");
                         return;
                     }