diff --git a/config.js b/config.js
index c13a21c..5eb4058 100644
--- a/config.js
+++ b/config.js
@@ -3,11 +3,24 @@
  * @return {object}
  */
 module.exports = {
-    path: {
-        windows: './index.js',
-        darwin: './index.js',
-        ubuntu: './index.js',
-        testPlatform: './test.exe',
-        linux: './index.js'
+    windows: {
+        path: './index.js',
+        command: ''
+    },
+    darwin: {
+        path: './test.sh',
+        command: 'sh test.sh'
+    },
+    ubuntu: {
+        path: './test.sh',
+        command: 'sh test.sh'
+    },
+    testPlatform: {
+        path: './test.exe',
+        command: 'sh test.sh'
+    },
+    linux: {
+        path: './test.sh',
+        command: 'sh test.sh'
     }
 };
\ No newline at end of file
diff --git a/index.js b/index.js
index 7881041..98943e0 100644
--- a/index.js
+++ b/index.js
@@ -6,6 +6,7 @@ const validateSafe = require('./lib/validate-safe');
 const validatePlatform = require('./lib/validate-platform');
 const validateExe = require('./lib/validate-exe');
 const command = require('./lib/command');
+const execute = require('./lib/execute');
 
 /**
  * Get user password 
@@ -14,26 +15,25 @@ const command = require('./lib/command');
  * @param {string} safe
  * @return {string}
  */
-module.exports =  (user, appID, safe) => {
+
+module.exports = (user, appID, safe) => {
     return new Promise((resolve, reject) => {
-        try {
-            // validate user input
-            validateUser(user);
-            // validate appID input
-            validateAppID(appID);
-            // validate safe input
-            validateSafe(safe);
-            // validate platform
-            validatePlatform();
-            // validate executable file
-            validateExe();
-            // set command string
-            const cmd = command(user, appID, safe);
-            // execute shell command with parameters
-            // validate result
-            resolve('password');
-        } catch (error) { 
-            reject(error); 
-        }
+        // validate user input
+        validateUser(user);
+        // validate appID input
+        validateAppID(appID);
+        // validate safe input
+        validateSafe(safe);
+        // validate platform
+        validatePlatform();
+        // validate executable file
+        validateExe();
+        // set command string
+        const cmd = command(user, appID, safe);
+        // execute shell command
+        const password = execute(cmd);
+        // return result
+        resolve(password); 
     });
-};
+};  
+
diff --git a/lib/command.js b/lib/command.js
index f6884a6..5bfc54d 100644
--- a/lib/command.js
+++ b/lib/command.js
@@ -9,6 +9,7 @@ const config = require('../config');
  */
 module.exports = (user, appID, safe) => {
     const platform = process.platform;
-    const command = `${config.path[platform]} GetPassword /p AppDescs.AppID=${appID} /p Query="Safe=${safe};Folder=root;Object=${user}" /o Password`;
+    // const command = `${config.path[platform]} GetPassword /p AppDescs.AppID=${appID} /p Query="Safe=${safe};Folder=root;Object=${user}" /o Password`;
+    const command = config[platform].command;
     return command;
 };
\ No newline at end of file
diff --git a/lib/execute.js b/lib/execute.js
index e69de29..b31112a 100644
--- a/lib/execute.js
+++ b/lib/execute.js
@@ -0,0 +1,13 @@
+const execSync = require('child_process').execSync;
+
+/**
+ * Execute shell command
+ * @param {string} command
+ * @return {string}
+ */
+module.exports = command => {
+    return new Promise((resolve, reject) => {
+        const result = execSync(command);
+        resolve(result.toString());
+    });
+};
diff --git a/lib/execute.test.js b/lib/execute.test.js
deleted file mode 100644
index e69de29..0000000
diff --git a/lib/validate-exe.js b/lib/validate-exe.js
index 3f4480e..05178b9 100644
--- a/lib/validate-exe.js
+++ b/lib/validate-exe.js
@@ -7,7 +7,7 @@ const config = require('../config');
 module.exports = testPlatform => {
     try {
         const platform = testPlatform || process.platform;
-        const exe = config.path[platform];
+        const exe = config[platform].path;
         const exists = fs.existsSync(exe);
         if (!exists) {
             throw new Error(`Executable ${exe} not exists`);
diff --git a/lib/validate-platform.js b/lib/validate-platform.js
index 191b188..e4e8930 100644
--- a/lib/validate-platform.js
+++ b/lib/validate-platform.js
@@ -6,7 +6,7 @@ const config = require('../config');
 module.exports = testPlatform => {
     try {
         const platform = testPlatform || process.platform;
-        const valid = config.path[platform];
+        const valid = config[platform];
         if (!valid) {
             throw new Error(`Platform ${platform} is not supported`);
         }
diff --git a/package.json b/package.json
index 9fff397..2d54cce 100644
--- a/package.json
+++ b/package.json
@@ -1,11 +1,11 @@
 {
   "name": "@iiddoo/aim-password-retrieve",
-  "version": "2.1.1",
+  "version": "2.1.2",
   "description": "Retrieve password for user.",
   "main": "index.js",
   "scripts": {
     "test": "mocha --reporter spec",
-    "update": "npm version patch -m 'Version %s - add sweet badges'",
+    "update": "npm version patch -m 'Version %s - add badges'",
     "cover": "node_modules/istanbul/lib/cli.js cover node_modules/mocha/bin/_mocha -- -R spec test/*"
   },
   "repository": {
diff --git a/test.sh b/test.sh
new file mode 100644
index 0000000..4d0bd0c
--- /dev/null
+++ b/test.sh
@@ -0,0 +1,2 @@
+sleep 1
+echo "password"
\ No newline at end of file
diff --git a/test/execute.test.js b/test/execute.test.js
new file mode 100644
index 0000000..adf5c30
--- /dev/null
+++ b/test/execute.test.js
@@ -0,0 +1,17 @@
+const execute = require('../lib/execute');
+const { expect } = require('chai');
+
+describe('Execute', ()=> {
+    it('Should throw error', done => {
+        expect(async ()=> {
+            try {
+                execute();
+            } catch (error) {}
+        }).to.throw
+        done()
+    });
+    it('Should return string', async () => {
+        const result = await execute('cd ./ && sh test.sh');
+        expect(result).to.be.a('string'); 
+    });
+});
diff --git a/test/index.test.js b/test/index.test.js
index b342050..acef636 100644
--- a/test/index.test.js
+++ b/test/index.test.js
@@ -3,8 +3,15 @@ const { expect } = require('chai');
 
 describe('Index', ()=> {
     it('Should throw error', done => {
-        expect(index()).to.throw
-        done()
+        expect(async () => {
+            try {
+                const pwd = await index();
+                return pwd;
+            } catch (error) {
+                throw new Error(error);
+            }
+        }).to.throw
+        done();
     });
     it('Should return password', async () => {
         const pwd = await index('user', 'my_appID', 'my_safe');
diff --git a/test/validate-exe.test.js b/test/validate-exe.test.js
index e1f3f99..54d1d6a 100644
--- a/test/validate-exe.test.js
+++ b/test/validate-exe.test.js
@@ -9,4 +9,3 @@ describe('Validate executable', ()=> {
         expect(validate()).to.equal(); 
     });
 });
-
diff --git a/test/validate-safe.test.js b/test/validate-safe.test.js
index 8149edd..bc2e31c 100644
--- a/test/validate-safe.test.js
+++ b/test/validate-safe.test.js
@@ -15,4 +15,3 @@ describe('Validate safe', ()=> {
         expect(validate('safe_name')).to.equal(); 
     });
 });
-