diff --git a/WelsonJS.Toolkit/WelsonJS.Service/ServiceMain.cs b/WelsonJS.Toolkit/WelsonJS.Service/ServiceMain.cs
index a3298b1..ba0250e 100644
--- a/WelsonJS.Toolkit/WelsonJS.Service/ServiceMain.cs
+++ b/WelsonJS.Toolkit/WelsonJS.Service/ServiceMain.cs
@@ -261,7 +261,7 @@ namespace WelsonJS.Service
                     {
                         _args = new string[]
                         {
-                            $"--user-variables-file={userVariablesHandler.GetEnvFilePath()}",
+                            $"--env-file={userVariablesHandler.GetEnvFilePath()}",
                             "--user-interactive"
                         };
                     }
@@ -269,7 +269,7 @@ namespace WelsonJS.Service
                     {
                         _args = new string[]
                         {
-                            $"--user-variables-file={userVariablesHandler.GetEnvFilePath()}"
+                            $"--env-file={userVariablesHandler.GetEnvFilePath()}"
                         };
                     }
                     startArguments = new string[args.Length + _args.Length];
diff --git a/app.js b/app.js
index baca85b..2e2165b 100644
--- a/app.js
+++ b/app.js
@@ -1,48 +1,15 @@
-//////////////////////////////////////////////////////////////////////////////////
-//
-//    app.js
-//
-//    Bootstrap code for running a javascript app in windows.  Run as:
-//
-//    cscript.js app.js <appname> <app arguments> ...
-//
-/////////////////////////////////////////////////////////////////////////////////
+// app.js
+// Bootstrap code for running a javascript app in windows.  Run as:
+// cscript.js app.js <appname> <app arguments> ...
+// 
+// Author: Namhyeon Go <abuse@catswords.net>
+// Repository: https://github.com/gnh1201/welsonjs
+// Report abuse: abuse@catswords.net
+// Latest news: [ActivityPub @catswords_oss@catswords.social](https://catswords.social/@catswords_oss)
+// Join our team: https://teams.live.com/l/community/FEACHncAhq8ldnojAI
+// 
 "use strict";
 
-/////////////////////////////////////////////////////////////////////////////////
-//
-//    Author: Namhyeon Go <abuse@catswords.net>
-//    Repository: https://github.com/gnh1201/welsonjs
-//    Report abuse: abuse@catswords.net
-//    Latest news: ActivityPub @catswords_oss@catswords.social
-//    Join our team: https://teams.live.com/l/community/FEACHncAhq8ldnojAI
-//
-/////////////////////////////////////////////////////////////////////////////////
-
-/////////////////////////////////////////////////////////////////////////////////
-// Bootstrap code, basic module loading functionality
-/////////////////////////////////////////////////////////////////////////////////
-
-//
-//    The module loaded is run inside a function, with one argument, global which
-//    points to the global context.  So global.FN is the same as FN (as long as a
-//    version of FN does not exist in local scope).
-//
-//    The module should return its interface at the end of the script.  The basic
-//    pattern for a module is:-
-//
-//    var module = { ... };
-//    return module;
-//
-//    Or:-
-//
-//    return function() {
-//    }
-//
-//    The appname argument causes <appname>.js to be loaded. The interface returned
-//    must define main = function(args) {}, which is called once the module is
-//    loaded.
-//
 var exit = function(status) {
     console.error("Exit", status, "caused");
 
@@ -239,8 +206,8 @@ function require(pathname) {
 
     var T = null;
     var pos = FN.indexOf('://');
-
-    if (pos > -1) {    // from a remote server
+    if (pos > -1) {
+        // load script from a remote server
         if (["http", "https"].indexOf(FN.substring(0, pos)) > -1) {
             require._addScriptProvider(function(url) {
                 try {
@@ -263,7 +230,8 @@ function require(pathname) {
                 i++;
             }
         }
-    } else {    // from a local server
+    } else {
+        // load script from a local server
         var _filename = (function(fs, path) {
             var filepaths = [
                 FN,    // default
diff --git a/lib/file.js b/lib/file.js
index 62d5a0f..1b9cfd8 100644
--- a/lib/file.js
+++ b/lib/file.js
@@ -5,7 +5,7 @@
 //
 /////////////////////////////////////////////////////////////////////////////////
 
-var LIB = require("lib/std");
+var STD = require("lib/std");
 var PipeIPC = require("lib/pipe-ipc");
 
 /////////////////////////////////////////////////////////////////////////////////
@@ -197,6 +197,44 @@ function rotateFile(FN, content, numOfLines, charset) {
     return result;
 }
 
+// Function to load and parse the .env file
+var loadEnvFromFile = function(envFilePath, callback) {
+    try {
+        // Read the file content using PipeIPC.CdoCharset.CdoUTF_8 encoding
+        var envString = readFile(envFilePath, PipeIPC.CdoCharset.CdoUTF_8);
+        
+        // Parse the environment variables
+        var envConfig = parseEnv(envString);
+
+        console.log('Environment variables loaded from ' + envFilePath);
+
+        // Call the callback function if provided
+        if (typeof callback === "function") {
+            try {
+                callback(envConfig);
+            } catch (e) {
+                console.error('Callback error:', e.message);
+            }
+        }
+    } catch (e) {
+        console.error('Error reading environment file:', envFilePath, e.message);
+    }
+};
+
+// Function to find --env-file argument in the args array and load the environment file
+var loadEnvFromArgs = function(args, callback) {
+    var envFileArg = args.find(function(x) {
+        return x.startsWith('--env-file=');
+    });
+
+    if (envFileArg) {
+        var envFilePath = envFileArg.split('=')[1];
+        loadEnvFromFile(envFilePath, callback);
+    } else {
+        console.warn('No --env-file argument provided.');
+    }
+};
+
 exports.fileExists = fileExists;
 exports.folderExists = folderExists;
 exports.fileGet = fileGet;
@@ -210,10 +248,12 @@ exports.deleteFile = deleteFile;
 exports.includeFile = includeFile;
 exports.appendFile = appendFile;
 exports.rotateFile = rotateFile;
+exports.loadEnvFromFile = loadEnvFromFile;
+exports.loadEnvFromArgs = loadEnvFromArgs;
 
 exports.CdoCharset = PipeIPC.CdoCharset;
 
-exports.VERSIONINFO = "File IO Library (file.js) version 0.2.12";
+exports.VERSIONINFO = "File IO Library (file.js) version 0.2.13";
 exports.AUTHOR = "abuse@catswords.net";
 exports.global = global;
 exports.require = global.require;
diff --git a/lib/std.js b/lib/std.js
index 44ed863..a47ea4c 100644
--- a/lib/std.js
+++ b/lib/std.js
@@ -267,6 +267,23 @@ function confirm(message) {
     }
 }
 
+function parseEnv(s) {
+    var envConfig = {};
+    var lines = s.split('\n');
+
+    for (var i = 0; i < lines.length; i++) {
+        var line = lines[i].replace(/^\s+|\s+$/g, '');
+        if (line && line.indexOf('=') !== -1 && line.charAt(0) !== '#') {
+            var parts = line.split('=');
+            var key = parts[0].replace(/^\s+|\s+$/g, '');
+            var value = parts[1].replace(/^\s+|\s+$/g, '').replace(/^"(.*)"$/, '$1');
+            envConfig[key] = value;
+        }
+    }
+
+    return envConfig;
+};
+
 // Standard Event Object
 function StdEvent(type, options) {
     this.defaultPrevented = false;
@@ -534,7 +551,7 @@ exports.Storage = StdStorage;
 exports.alert = alert;
 exports.confirm = confirm;
 
-exports.VERSIONINFO = "WelsonJS Standard Library (std.js) version 0.8.10";
+exports.VERSIONINFO = "WelsonJS Standard Library (std.js) version 0.8.11";
 exports.AUTHOR = "abuse@catswords.net";
 exports.global = global;
 exports.require = global.require;