diff --git a/app/src/main/java/io/neoterm/frontend/preference/NeoPreference.kt b/app/src/main/java/io/neoterm/frontend/preference/NeoPreference.kt
index 1592974..1507b71 100644
--- a/app/src/main/java/io/neoterm/frontend/preference/NeoPreference.kt
+++ b/app/src/main/java/io/neoterm/frontend/preference/NeoPreference.kt
@@ -179,33 +179,69 @@ object NeoPreference {
     }
 
     fun getFontSize(): Int {
-        return loadInt(NeoPreference.KEY_FONT_SIZE, DefaultPreference.fontSize)
+        return loadInt(NeoPreference.KEY_FONT_SIZE,
+                DefaultPreference.fontSize)
     }
 
     fun getInitialCommand(): String {
-        return loadString(R.string.key_general_initial_command, DefaultPreference.initialCommand)
+        return loadString(R.string.key_general_initial_command,
+                DefaultPreference.initialCommand)
     }
 
     fun isBellEnabled(): Boolean {
-        return loadBoolean(R.string.key_general_bell, DefaultPreference.enableBell)
+        return loadBoolean(R.string.key_general_bell,
+                DefaultPreference.enableBell)
     }
 
     fun isVibrateEnabled(): Boolean {
-        return loadBoolean(R.string.key_general_vibrate, DefaultPreference.enableVibrate)
+        return loadBoolean(R.string.key_general_vibrate,
+                DefaultPreference.enableVibrate)
     }
 
     fun isExecveWrapperEnabled() : Boolean {
-        return loadBoolean(R.string.key_general_use_execve_wrapper, DefaultPreference.enableExecveWrapper)
+        return loadBoolean(R.string.key_general_use_execve_wrapper,
+                DefaultPreference.enableExecveWrapper)
     }
 
     fun isSpecialVolumeKeysEnabled() : Boolean {
-        return loadBoolean(R.string.key_general_volume_as_control, DefaultPreference.enableSpecialVolumeKeys)
+        return loadBoolean(R.string.key_general_volume_as_control,
+                DefaultPreference.enableSpecialVolumeKeys)
     }
 
     fun isAutoCompletionEnabled() : Boolean {
-        return loadBoolean(R.string.key_general_auto_completion, DefaultPreference.enableAutoCompletion)
+        return loadBoolean(R.string.key_general_auto_completion,
+                DefaultPreference.enableAutoCompletion)
     }
 
+    fun isBackButtonBeMappedToEscapeEnabled(): Boolean {
+        return loadBoolean(R.string.key_generaL_backspace_map_to_esc,
+                DefaultPreference.enableBackButtonBeMappedToEscape)
+    }
+
+    fun isExtraKeysEnabled(): Boolean {
+        return loadBoolean(R.string.key_ui_eks_enabled,
+                DefaultPreference.enableExtraKeys)
+    }
+
+    fun isExplicitExtraKeysWeightEnabled() :Boolean {
+        return NeoPreference.loadBoolean(R.string.key_ui_eks_weight_explicit,
+                DefaultPreference.enableExplicitExtraKeysWeight)
+    }
+
+    fun isFullScreenEnabled() : Boolean {
+        return NeoPreference.loadBoolean(R.string.key_ui_fullscreen,
+                DefaultPreference.enableFullScreen)
+    }
+
+    fun isHideToolbarEnabled() :Boolean {
+        return NeoPreference.loadBoolean(R.string.key_ui_hide_toolbar,
+                DefaultPreference.enableAutoHideToolbar)
+    }
+
+    fun isNextTabEnabled() :Boolean {
+        return NeoPreference.loadBoolean(R.string.key_ui_next_tab_anim,
+                DefaultPreference.enableSwitchNextTab)
+    }
 
 //    fun storeWindowSize(context: Context, width: Int, height: Int) {
 //        store(KEY_FLOATING_WIDTH, width)
diff --git a/app/src/main/java/io/neoterm/frontend/session/shell/ShellProfile.kt b/app/src/main/java/io/neoterm/frontend/session/shell/ShellProfile.kt
index dbf9151..f31c96c 100644
--- a/app/src/main/java/io/neoterm/frontend/session/shell/ShellProfile.kt
+++ b/app/src/main/java/io/neoterm/frontend/session/shell/ShellProfile.kt
@@ -18,6 +18,8 @@ class ShellProfile {
     var enableExecveWrapper = DefaultPreference.enableExecveWrapper
     var enableSpecialVolumeKeys = DefaultPreference.enableSpecialVolumeKeys
     var enableAutoCompletion = DefaultPreference.enableAutoCompletion
+    var enableBackButtonBeMappedToEscape = DefaultPreference.enableBackButtonBeMappedToEscape
+    var enableExtraKeys = DefaultPreference.enableExtraKeys
 
     var profileFont: String
     var profileColorScheme: String
@@ -36,5 +38,7 @@ class ShellProfile {
         enableExecveWrapper = NeoPreference.isExecveWrapperEnabled()
         enableSpecialVolumeKeys = NeoPreference.isSpecialVolumeKeysEnabled()
         enableAutoCompletion = NeoPreference.isAutoCompletionEnabled()
+        enableBackButtonBeMappedToEscape = NeoPreference.isBackButtonBeMappedToEscapeEnabled()
+        enableExtraKeys = NeoPreference.isExtraKeysEnabled()
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/neoterm/frontend/session/shell/ShellTermSession.kt b/app/src/main/java/io/neoterm/frontend/session/shell/ShellTermSession.kt
index 52497f0..a88827b 100644
--- a/app/src/main/java/io/neoterm/frontend/session/shell/ShellTermSession.kt
+++ b/app/src/main/java/io/neoterm/frontend/session/shell/ShellTermSession.kt
@@ -19,7 +19,7 @@ open class ShellTermSession private constructor(shellPath: String, cwd: String,
                                                 val shellProfile: ShellProfile)
     : TerminalSession(shellPath, cwd, args, env, changeCallback) {
 
-    var exitPrompt = App.get().getString(R.string.process_exit_prompt)
+    private var exitPrompt = App.get().getString(R.string.process_exit_prompt)
 
     override fun initializeEmulator(columns: Int, rows: Int) {
         super.initializeEmulator(columns, rows)
@@ -202,8 +202,7 @@ open class ShellTermSession private constructor(shellPath: String, cwd: String,
                 var ldPreloadEnv = ""
 
                 // execve(2) wrapper to avoid incorrect shebang
-                if (NeoPreference.loadBoolean(R.string.key_general_use_execve_wrapper,
-                        DefaultPreference.enableExecveWrapper)) {
+                if (shellProfile.enableExecveWrapper) {
                     ldPreloadEnv = "LD_PRELOAD=${App.get().applicationInfo.nativeLibraryDir}/libnexec.so"
                 }
 
diff --git a/app/src/main/java/io/neoterm/frontend/session/shell/client/TermSessionCallback.kt b/app/src/main/java/io/neoterm/frontend/session/shell/client/TermSessionCallback.kt
index e00f77e..34c1e44 100644
--- a/app/src/main/java/io/neoterm/frontend/session/shell/client/TermSessionCallback.kt
+++ b/app/src/main/java/io/neoterm/frontend/session/shell/client/TermSessionCallback.kt
@@ -9,6 +9,7 @@ import io.neoterm.R
 import io.neoterm.backend.TerminalSession
 import io.neoterm.frontend.preference.DefaultPreference
 import io.neoterm.frontend.preference.NeoPreference
+import io.neoterm.frontend.session.shell.ShellTermSession
 
 /**
  * @author kiva
@@ -43,8 +44,9 @@ class TermSessionCallback : TerminalSession.SessionChangedCallback {
 
     override fun onBell(session: TerminalSession?) {
         val termView = termData?.termView ?: return
+        val shellSession = session as ShellTermSession
 
-        if (NeoPreference.loadBoolean(R.string.key_general_bell, DefaultPreference.enableBell)) {
+        if (shellSession.shellProfile.enableBell) {
             if (soundPool == null) {
                 soundPool = SoundPool.Builder().setMaxStreams(1).build()
                 bellId = soundPool!!.load(termView.context, R.raw.bell, 1)
@@ -52,7 +54,7 @@ class TermSessionCallback : TerminalSession.SessionChangedCallback {
             soundPool?.play(bellId, 1f, 1f, 0, 0, 1f)
         }
 
-        if (NeoPreference.loadBoolean(R.string.key_general_vibrate, DefaultPreference.enableVibrate)) {
+        if (shellSession.shellProfile.enableVibrate) {
             val vibrator = termView.context.getSystemService(Context.VIBRATOR_SERVICE) as Vibrator
             vibrator.vibrate(100)
         }
diff --git a/app/src/main/java/io/neoterm/frontend/session/shell/client/TermViewClient.kt b/app/src/main/java/io/neoterm/frontend/session/shell/client/TermViewClient.kt
index 409a0e1..fe576ad 100644
--- a/app/src/main/java/io/neoterm/frontend/session/shell/client/TermViewClient.kt
+++ b/app/src/main/java/io/neoterm/frontend/session/shell/client/TermViewClient.kt
@@ -14,6 +14,7 @@ import io.neoterm.component.eks.ExtraKeysComponent
 import io.neoterm.frontend.component.ComponentManager
 import io.neoterm.frontend.preference.DefaultPreference
 import io.neoterm.frontend.preference.NeoPreference
+import io.neoterm.frontend.session.shell.ShellTermSession
 import io.neoterm.frontend.terminal.TerminalViewClient
 
 
@@ -37,16 +38,14 @@ class TermViewClient(val context: Context) : TerminalViewClient {
     }
 
     override fun onSingleTapUp(e: MotionEvent?) {
-        val termView = termData?.termView
-        if (termView != null) {
-            (context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager)
-                    .showSoftInput(termView, InputMethodManager.SHOW_IMPLICIT)
-        }
+        val termView = termData?.termView ?: return
+        (context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager)
+                .showSoftInput(termView, InputMethodManager.SHOW_IMPLICIT)
     }
 
     override fun shouldBackButtonBeMappedToEscape(): Boolean {
-        return NeoPreference.loadBoolean(R.string.key_generaL_backspace_map_to_esc,
-                DefaultPreference.enableBackButtonBeMappedToEscape)
+        val shellSession = termData?.termSession as ShellTermSession? ?: return false
+        return shellSession.shellProfile.enableBackButtonBeMappedToEscape
     }
 
     override fun copyModeChanged(copyMode: Boolean) {
@@ -196,9 +195,11 @@ class TermViewClient(val context: Context) : TerminalViewClient {
         if (event == null) {
             return false
         }
+
+        val shellSession = termData?.termSession as ShellTermSession? ?: return false
+
         // Volume keys as special keys
-        val volumeAsSpecialKeys = NeoPreference.loadBoolean(R.string.key_general_volume_as_control,
-                DefaultPreference.enableSpecialVolumeKeys)
+        val volumeAsSpecialKeys = shellSession.shellProfile.enableSpecialVolumeKeys
 
         val inputDevice = event.device
         if (inputDevice != null && inputDevice.keyboardType == InputDevice.KEYBOARD_TYPE_ALPHABETIC) {
@@ -231,9 +232,9 @@ class TermViewClient(val context: Context) : TerminalViewClient {
 
     private fun updateExtraKeysVisibility(): Boolean {
         val extraKeysView = termData?.extraKeysView ?: return false
+        val shellSession = termData?.termSession as ShellTermSession? ?: return false
 
-        return if (NeoPreference.loadBoolean(R.string.key_ui_eks_enabled,
-                DefaultPreference.enableExtraKeys)) {
+        return if (shellSession.shellProfile.enableExtraKeys) {
             extraKeysView.visibility = View.VISIBLE
             true
         } else {
diff --git a/app/src/main/java/io/neoterm/frontend/terminal/eks/ExtraKeysView.kt b/app/src/main/java/io/neoterm/frontend/terminal/eks/ExtraKeysView.kt
index e755249..bdcf103 100755
--- a/app/src/main/java/io/neoterm/frontend/terminal/eks/ExtraKeysView.kt
+++ b/app/src/main/java/io/neoterm/frontend/terminal/eks/ExtraKeysView.kt
@@ -162,8 +162,7 @@ class ExtraKeysView(context: Context, attrs: AttributeSet) : LinearLayout(contex
         val line = LinearLayout(context)
 
         val layoutParams =
-                if (NeoPreference.loadBoolean(R.string.key_ui_eks_weight_explicit,
-                        DefaultPreference.enableExplicitExtraKeysWeight))
+                if (NeoPreference.isExplicitExtraKeysWeightEnabled())
                     LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 0, 1f)
                 else
                     LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
diff --git a/app/src/main/java/io/neoterm/ui/term/NeoTermActivity.kt b/app/src/main/java/io/neoterm/ui/term/NeoTermActivity.kt
index d89b25a..49b19ec 100644
--- a/app/src/main/java/io/neoterm/ui/term/NeoTermActivity.kt
+++ b/app/src/main/java/io/neoterm/ui/term/NeoTermActivity.kt
@@ -63,8 +63,7 @@ class NeoTermActivity : AppCompatActivity(), ServiceConnection, SharedPreference
 
         NeoPermission.initAppPermission(this, NeoPermission.REQUEST_APP_PERMISSION)
 
-        val fullscreen = NeoPreference.loadBoolean(R.string.key_ui_fullscreen,
-                DefaultPreference.enableFullScreen)
+        val fullscreen = NeoPreference.isFullScreenEnabled()
         if (fullscreen) {
             window.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                     WindowManager.LayoutParams.FLAG_FULLSCREEN)
@@ -101,10 +100,8 @@ class NeoTermActivity : AppCompatActivity(), ServiceConnection, SharedPreference
             return
         }
 
-        if (NeoPreference.loadBoolean(R.string.key_ui_fullscreen,
-                DefaultPreference.enableFullScreen)
-                || NeoPreference.loadBoolean(R.string.key_ui_hide_toolbar,
-                DefaultPreference.enableAutoHideToolbar)) {
+        if (NeoPreference.isFullScreenEnabled()
+                || NeoPreference.isHideToolbarEnabled()) {
             val toolbarHeight = toolbar.height.toFloat()
             val translationY = if (visible) 0.toFloat() else -toolbarHeight
             if (visible) {
@@ -665,8 +662,7 @@ class NeoTermActivity : AppCompatActivity(), ServiceConnection, SharedPreference
 
         if (tabSwitcher.count > 1) {
             var index = tabSwitcher.indexOf(tab)
-            if (NeoPreference.loadBoolean(R.string.key_ui_next_tab_anim,
-                    DefaultPreference.enableSwitchNextTab)) {
+            if (NeoPreference.isNextTabEnabled()) {
                 // 关闭当前窗口后，向下一个窗口切换
                 if (--index < 0) index = tabSwitcher.count - 1
             } else {