diff --git a/lib/platform/process.dart b/lib/platform/process.dart
index 6dbfa85..f099130 100644
--- a/lib/platform/process.dart
+++ b/lib/platform/process.dart
@@ -159,12 +159,11 @@ class ProcessExecutor {
       bool? printStdout,
       bool? printStderr,
       LogHandler? logHandler}) async {
-    var c = Completer<ProcessData>();
+    var printStdout_ = printStdout ?? true;
+    var printStderr_ = printStderr ?? true;
+    var processData = ProcessData(printStdout_, printStderr_,
+        logHandler: logHandler, decoder: decoder);
     try {
-      var printStdout_ = printStdout ?? true;
-      var printStderr_ = printStderr ?? true;
-      var processData = ProcessData(printStdout_, printStderr_,
-          logHandler: logHandler, decoder: decoder);
       if (Platform.isMacOS || Platform.isLinux) {
         workspace = workspace ?? Directory.systemTemp.path;
         var file = File('$workspace/$tempFileName');
@@ -214,22 +213,21 @@ class ProcessExecutor {
         logHandler ??
             ('This platform not support process executor.', LogType.error);
       }
-      c.complete(processData);
       await processData.waitForExit();
     } on Exception catch (e) {
       logHandler ??
           ('General Exception in ProcessExecutor.start: $e', LogType.error);
     }
-    return c.future;
+    return dataFutrue(processData);
   }
 
-  static Future<ProcessResult> run(StringBuffer shell,
+  static Future<ProcessResult?> run(StringBuffer shell,
       {String? workspace,
       bool printStdout = true,
       bool printStderr = true,
       Converter<List<int>, String>? decoder,
       LogHandler? logHandler}) async {
-    var c = Completer<ProcessResult>();
+    ProcessResult? processResult;
     workspace = workspace ?? Directory.systemTemp.path;
     var file = File('$workspace/$tempFileName');
     if (printStdout) {
@@ -244,7 +242,6 @@ class ProcessExecutor {
             LogType.verbose
           );
     }
-    ProcessResult? processResult;
     if (Platform.isMacOS || Platform.isLinux) {
       file.createSync();
       file.writeAsStringSync(shell.toString());
@@ -273,7 +270,6 @@ class ProcessExecutor {
       } finally {
         file.deleteSync();
       }
-      c.complete(processResult);
     } else if (Platform.isWindows) {
       file.createSync();
       file.writeAsStringSync(shell.toString());
@@ -289,13 +285,10 @@ class ProcessExecutor {
         //         'Error: ${eucKr.decode(processResult!.stderr)}');
       }
       file.deleteSync();
-      c.complete(processResult);
     } else {
-      logHandler ??
-          ('This platform not support process executor.', LogType.error);
-      c.complete(null);
+      return throw Exception('This platform not support process executor.');
     }
-    return c.future;
+    return dataFutrue(processResult);
   }
 
   static String get tempFileName {
@@ -370,7 +363,7 @@ Future<String> runGetStdout(StringBuffer shell) async {
   var batch =
       File('${Directory.systemTemp.path}/temp_${getRnadomPostfix()}.bat');
   batch.writeAsStringSync(shellStr);
-  var result = await ProcessExecutor.run(shell);
+  var result = (await ProcessExecutor.run(shell))!;
   if (result.exitCode == 0 || result.exitCode == 1) {
     c.complete(result.stdout);
     return c.future;
@@ -432,7 +425,7 @@ Future<List<ProcessInfo>> findProcess(String searchWord,
   } else {
     var shell = StringBuffer(
         'ps -A | grep \'$searchWord\' | grep -v grep | awk \'{\$2=\$3=""; print \$0}\'');
-    var result = await ProcessExecutor.run(shell, printStdout: false);
+    var result = (await ProcessExecutor.run(shell, printStdout: false))!;
     if (result.exitCode == 0) {
       var procList = result.stdout.toString().split('\n');
       for (var proc in procList) {
diff --git a/lib/utils/os_startup.dart b/lib/utils/os_startup.dart
index 71762d7..d491699 100644
--- a/lib/utils/os_startup.dart
+++ b/lib/utils/os_startup.dart
@@ -118,12 +118,10 @@ fi
 
   @override
   Future<bool> isRegistedStartup(String label) async {
-    var c = Completer<bool>();
     var plistName = '$label.plist';
     var userPath = await Path.userPath;
-    c.complete(
+    return dataFutrue(
         await File('$userPath/Library/LaunchAgents/$plistName').exists());
-    return c.future;
   }
 
   //shell file must have '#!/bin/sh'
@@ -140,16 +138,17 @@ fi
     final appDir = Directory('$userPath/Library/$label');
     final file = File('${appDir.path}/launch.sh');
 
-    if(!appDir.existsSync()) {
+    if (!appDir.existsSync()) {
       appDir.createSync(recursive: true);
     }
 
     var param = arguments == null ? '' : ' ${arguments.join(' ')}';
-    var launchContent = pathTemplate.replaceAll('{COMMAND}', '$executableFilePath$param');
+    var launchContent =
+        pathTemplate.replaceAll('{COMMAND}', '$executableFilePath$param');
     file.writeAsStringSync(launchContent);
 
     //create plist in LaunchAgents
-    
+
     final tagLogStandard = '{LOG_STANDARD}';
     final tagLogError = '{LOG_ERROR}';
     var plistContent = plistTemplate
@@ -171,16 +170,15 @@ fi
     await plistFile.create();
     await plistFile.writeAsString(plistContent);
 
-    var result = await ProcessExecutor.run(
-        StringBuffer('chmod +x "$executableFilePath" && chmod +x "${file.path}" '));
-    success = result.exitCode == 0;
+    var result = await ProcessExecutor.run(StringBuffer(
+        'chmod +x "$executableFilePath" && chmod +x "${file.path}" '));
+    success = result!.exitCode == 0;
 
     return dataFutrue(success);
   }
 
   @override
   Future<bool> unregistStartup(String label) async {
-    var c = Completer<bool>();
     var success = false;
     var plistName = '$label.plist';
     var userPath = await Path.userPath;
@@ -189,8 +187,7 @@ fi
       await file.delete();
       success = true;
     }
-    c.complete(success);
-    return c.future;
+    return dataFutrue(success);
   }
 }
 
@@ -217,13 +214,11 @@ WantedBy=default.target""";
 
   @override
   Future<bool> isRegistedStartup(String label) async {
-    var c = Completer<bool>();
     var exist = false;
     var userPath = await Path.userPath;
     exist =
         await File('$userPath/.config/systemd/user/$label.service').exists();
-    c.complete(exist);
-    return c.future;
+    return dataFutrue(exist);
   }
 
   //shell file must have '#!/bin/sh'
@@ -232,7 +227,6 @@ WantedBy=default.target""";
       {List<String>? arguments,
       String? logStandardFilePath,
       String? logErrorFilePath}) async {
-    var c = Completer<bool>();
     final tagLabel = '{LABEL}';
     final tagPath = '{FILE_PATH}';
     ProcessResult? result;
@@ -257,14 +251,12 @@ WantedBy=default.target""";
     shell.write('systemctl --user enable $label && ');
     shell.write('systemctl --user daemon-reload');
     result = await ProcessExecutor.run(shell);
-    print('exitCode: ${result.exitCode}');
-    c.complete(result.exitCode == 0);
-    return c.future;
+    print('exitCode: ${result!.exitCode}');
+    return dataFutrue(result.exitCode == 0);
   }
 
   @override
   Future<bool> unregistStartup(String label) async {
-    var c = Completer<bool>();
     var success = false;
     var userPath = await Path.userPath;
     var shell = StringBuffer();
@@ -274,7 +266,7 @@ WantedBy=default.target""";
     shell.write('systemctl --user disable $label && ');
     shell.write('systemctl --user daemon-reload');
     var result = await ProcessExecutor.run(shell);
-    success = result.exitCode == 0;
+    success = result!.exitCode == 0;
 
     if (success) {
       success = false;
@@ -284,8 +276,7 @@ WantedBy=default.target""";
         success = true;
       }
     }
-    c.complete(success);
-    return c.future;
+    return dataFutrue(success);
   }
 }
 
@@ -303,7 +294,6 @@ Set WshShell = Nothing
 
   @override
   Future<bool> isRegistedStartup(String label) async {
-    var c = Completer<bool>();
     //For Windows 8, 10
     var exist = false;
     var userPath = await Path.userPath;
@@ -318,8 +308,7 @@ Set WshShell = Nothing
         break;
       }
     }
-    c.complete(exist);
-    return c.future;
+    return dataFutrue(exist);
   }
 
   //shell file must have '#!/bin/sh'
@@ -328,8 +317,6 @@ Set WshShell = Nothing
       {List<String>? arguments,
       String? logStandardFilePath,
       String? logErrorFilePath}) async {
-    var c = Completer<bool>();
-    var file = File(executableFilePath);
     ProcessResult? result;
     //For Windows 8, 10
     var userPath = Platform.environment['UserProfile'];
@@ -361,13 +348,11 @@ Set WshShell = Nothing
     var symbolicPath = '$userPath$windowsStartupPath$label.vbs';
     result = await ProcessExecutor.run(
         StringBuffer('mklink "$symbolicPath" "${vbsFile.path}"'));
-    c.complete(result.exitCode == 0);
-    return c.future;
+    return dataFutrue(result!.exitCode == 0);
   }
 
   @override
   Future<bool> unregistStartup(String label) async {
-    var c = Completer<bool>();
     var success = false;
     //For Windows 8, 10
     var userPath = Platform.environment['UserProfile'];
@@ -398,7 +383,6 @@ Set WshShell = Nothing
         break;
       }
     }
-    c.complete(success);
-    return c.future;
+    return dataFutrue(success);
   }
 }