diff --git a/App.axaml.cs b/App.axaml.cs
index dd97a25..0a82e90 100644
--- a/App.axaml.cs
+++ b/App.axaml.cs
@@ -14,6 +14,7 @@ internal partial class App : Application
 
     public override void OnFrameworkInitializationCompleted()
     {
+        // Todo: Check x11-utils & xdg-utils environment for Linux.
         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
         {
             #region Upgrade Settings
diff --git a/Wins/AboutWin.axaml.cs b/Wins/AboutWin.axaml.cs
index ed175a6..2d30d9e 100644
--- a/Wins/AboutWin.axaml.cs
+++ b/Wins/AboutWin.axaml.cs
@@ -49,21 +49,29 @@ public partial class AboutWin : Window
         });
     }
 
-    private void AboutButton_Click(object sender, RoutedEventArgs e)
+    private async Task AboutButton_ClickAsync(object sender, RoutedEventArgs e)
     {
-        //Button senderButton = (Button)sender;
+        Button senderButton = (Button)sender;
 
-        //if (senderButton == VersionButton)
-        //    await MessageBoxManager.GetMessageBoxStandard(string.Empty, $"{AboutConst._ReleasePagePasswordLabel} 3wnj").ShowWindowDialogAsync(this);
+        if (senderButton == VersionButton)
+            await MessageBoxManager.GetMessageBoxStandard(string.Empty, $"{AboutConst._ReleasePagePasswordLabel} 3wnj").ShowWindowDialogAsync(this);
 
-        //ProcessStartInfo processStartInfo = new(senderButton == EmailButton ? "mailto:" : string.Empty + ToolTip.GetTip(senderButton)) { UseShellExecute = true };
+        string processStartUrl = senderButton == EmailButton ? "mailto:" : string.Empty + ToolTip.GetTip(senderButton);
 
-        //try { Process.Start(processStartInfo); }
-        //catch (UnauthorizedAccessException)
-        //{
-        //    processStartInfo.Verb = "RunAs";
-        //    Process.Start(processStartInfo);
-        //}
+        try
+        {
+            if (OperatingSystem.IsWindows())
+                Process.Start(new ProcessStartInfo(processStartUrl) { UseShellExecute = true });
+            else
+                Process.Start("xdg-open", processStartUrl);
+        }
+        catch (UnauthorizedAccessException)
+        {
+            if (OperatingSystem.IsWindows())
+                Process.Start(new ProcessStartInfo(processStartUrl) { UseShellExecute = true, Verb = "RunAs" });
+            else
+                Process.Start("sudo", $"xdg-open {processStartUrl}");
+        }
     }
 
     private void AboutWin_KeyDown(object sender, KeyEventArgs e)
diff --git a/Wins/MainWin.axaml.cs b/Wins/MainWin.axaml.cs
index a3b775d..02978a5 100644
--- a/Wins/MainWin.axaml.cs
+++ b/Wins/MainWin.axaml.cs
@@ -331,7 +331,10 @@ public partial class MainWin : Window
                             continue;
 
                         if (await MessageBoxManager.GetMessageBoxStandard(string.Empty, MainConst._LaunchNginxErrorPrompt, ButtonEnum.YesNo).ShowWindowDialogAsync(this) == ButtonResult.Yes)
-                            Process.Start(new ProcessStartInfo(MainConst.NginxErrorLogsPath) { UseShellExecute = true });
+                            if (OperatingSystem.IsWindows())
+                                Process.Start(new ProcessStartInfo(MainConst.NginxErrorLogsPath) { UseShellExecute = true });
+                            else
+                                Process.Start("xdg-open", MainConst.NginxErrorLogsPath);
 
                         break;
                     }
@@ -532,8 +535,8 @@ public partial class MainWin : Window
             try { Process.Start(new ProcessStartInfo(cealHostPath) { UseShellExecute = true }); }
             catch (UnauthorizedAccessException) { Process.Start(new ProcessStartInfo(cealHostPath) { UseShellExecute = true, Verb = "RunAs" }); }
         else
-            try { Process.Start("vi", cealHostPath); }
-            catch (UnauthorizedAccessException) { Process.Start("sudo", $"vi {cealHostPath}"); }
+            try { Process.Start("xdg-open", cealHostPath); }
+            catch (UnauthorizedAccessException) { Process.Start("sudo", $"xdg-open {cealHostPath}"); }
     }
     private async void EditConfButton_Click(object sender, RoutedEventArgs e)
     {
@@ -557,7 +560,7 @@ public partial class MainWin : Window
         if (OperatingSystem.IsWindows())
             Process.Start(new ProcessStartInfo(confPath) { UseShellExecute = true });
         else
-            Process.Start("vi", confPath);
+            Process.Start("xdg-open", confPath);
     }
     private async void UpdateUpstreamHostButton_Click(object? sender, RoutedEventArgs e)
     {
@@ -595,8 +598,12 @@ public partial class MainWin : Window
                         await MessageBoxManager.GetMessageBoxStandard(string.Empty, MainConst._UpdateUpstreamHostSuccessMsg).ShowWindowDialogAsync(this);
                     }
                     else if (overrideOptionResult == ButtonResult.No)
-                        try { Process.Start(new ProcessStartInfo(upstreamUpstreamHostUrl) { UseShellExecute = true }); }
-                        catch (UnauthorizedAccessException) { Process.Start(new ProcessStartInfo(upstreamUpstreamHostUrl) { UseShellExecute = true, Verb = "RunAs" }); }
+                        if (OperatingSystem.IsWindows())
+                            try { Process.Start(new ProcessStartInfo(upstreamUpstreamHostUrl) { UseShellExecute = true }); }
+                            catch (UnauthorizedAccessException) { Process.Start(new ProcessStartInfo(upstreamUpstreamHostUrl) { UseShellExecute = true, Verb = "RunAs" }); }
+                        else
+                            try { Process.Start("xdg-open", upstreamUpstreamHostUrl); }
+                            catch (UnauthorizedAccessException) { Process.Start("sudo", $"xdg-open {upstreamUpstreamHostUrl}"); }
                 }
         }
         catch when (sender == null) { }