diff --git a/.gitignore b/.gitignore
index 3c3629e..eb03e3e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 node_modules
+*.log
diff --git a/lib/index.js b/lib/index.js
index 0c6b358..0fba344 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -40,6 +40,10 @@ class Maid {
   }
 
   async runTask(taskName, throwWhenNoMatchedTask = true) {
+    // type Task = { name: string, type: string, script: string }
+    // type Task = { name: 'lint', type: 'js', script: 'var bar = 123' }
+    // type Task = { name: 'test', type: 'bash', script: 'tap *.js' }
+    // type Task = { name: 'meow', type: 'python', script: 'print("meooow")' }
     const task =
       taskName &&
       this.maidfile &&
@@ -58,23 +62,30 @@ class Maid {
     const start = Date.now()
 
     logger.log(`Starting '${chalk.cyan(task.name)}'...`)
+
     await new Promise((resolve, reject) => {
       const handleError = err => {
         throw new MaidError(`Task '${task.name}' failed.\n${err.stack}`)
       }
+      // task.type = bash|sh
       if (checkTypes(task, ['sh', 'bash'])) {
-        return runCLICommand({ task, resolve, reject })
+        runCLICommand({ task, resolve, reject })
+        return
       }
+      // task.type = python|py
       if (checkTypes(task, ['py', 'python'])) {
-        return runCLICommand({ type: 'python', task, resolve, reject })
+        runCLICommand({ task, resolve, reject })
+        return
       }
       if (checkTypes(task, ['js', 'javascript'])) {
         let res
+
         try {
           res = requireFromString(task.script, this.maidfile.filepath)
         } catch (err) {
           return handleError(err)
         }
+
         res = res.default || res
         return resolve(
           typeof res === 'function'
diff --git a/lib/parseMarkdown.js b/lib/parseMarkdown.js
index c77955e..6ae9bf5 100644
--- a/lib/parseMarkdown.js
+++ b/lib/parseMarkdown.js
@@ -149,7 +149,7 @@ module.exports = (content, { section, filepath } = {}) => {
       // Currently only use the first one
       for (const token of sectionTokens) {
         if (token.type === 'fence') {
-          task.script = token.content
+          task.script = token.content.trim()
           task.type = token.info
           break
         }
diff --git a/lib/runCLICommand.js b/lib/runCLICommand.js
index 0648784..6b3f8b0 100644
--- a/lib/runCLICommand.js
+++ b/lib/runCLICommand.js
@@ -1,16 +1,31 @@
 const path = require('path')
-const spawn = require('cross-spawn')
+const execa = require('execa')
 const MaidError = require('./MaidError')
 
 module.exports = ({ task, type = task.type, resolve, reject }) => {
-  const cmd = spawn(type, ['-c', task.script, ...process.argv.slice(2)], {
+  const modulesBin = path.resolve(path.join('node_modules', '.bin'))
+  const isShell = /(ba|z)?sh/.test(type)
+  const isPython = /py(thon)?/.test(type)
+  const args = process.argv.slice(2)
+
+  let script = null
+
+  if (isShell) {
+    script = [task.script, ...args]
+  } else if (isPython) {
+    script = ['python', '-c', task.script, ...args]
+  } else {
+    script = [type, task.script, ...args]
+  }
+
+  const promise = execa.shell(script.join(' '), {
     stdio: 'inherit',
     env: Object.assign({}, process.env, {
-      PATH: `${path.resolve('node_modules/.bin')}:${process.env.PATH}`
+      PATH: `${modulesBin}:${process.env.PATH}`
     })
   })
 
-  cmd.on('close', code => {
+  promise.on('close', code => {
     if (code === 0) {
       resolve()
     } else {
@@ -18,5 +33,10 @@ module.exports = ({ task, type = task.type, resolve, reject }) => {
     }
   })
 
-  return cmd
+  // we don't need to return
+  // 1. because this function is executed in new Promise(() => {})
+  // 2. we have its resolve and reject, so it's better to use them
+  promise.then(resolve).catch(err => {
+    reject(new MaidError(`task "${task.name}" failed with "${err.message}"`))
+  })
 }
diff --git a/package.json b/package.json
index db03732..d342c23 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
     "cac": "^5.0.10",
     "chalk": "^2.4.1",
     "cross-spawn": "^6.0.5",
+    "execa": "^0.10.0",
     "fancy-log": "^1.3.2",
     "joycon": "^1.0.4",
     "markdown-it": "^8.4.1",
diff --git a/test/snapshots/parseMarkdown.test.js.md b/test/snapshots/parseMarkdown.test.js.md
index f47dd9f..593c808 100644
--- a/test/snapshots/parseMarkdown.test.js.md
+++ b/test/snapshots/parseMarkdown.test.js.md
@@ -16,8 +16,7 @@ Generated by [AVA](https://ava.li).
           before: [],
           description: '',
           name: 'key',
-          script: `console.log('key')␊
-          `,
+          script: 'console.log(\'key\')',
           type: 'js',
         },
         {
@@ -25,8 +24,7 @@ Generated by [AVA](https://ava.li).
           before: [],
           description: 'hehehe',
           name: 'goodbye',
-          script: `echo goodbye␊
-          `,
+          script: 'echo goodbye',
           type: 'sh',
         },
       ],
@@ -55,8 +53,7 @@ Generated by [AVA](https://ava.li).
           ␊
           But it's very complex so I'm writing some instructions.`,
           name: 'hey',
-          script: `console.log('key')␊
-          `,
+          script: 'console.log(\'key\')',
           type: 'js',
         },
         {
@@ -64,12 +61,11 @@ Generated by [AVA](https://ava.li).
           before: [],
           description: 'hehehe',
           name: 'goodbye',
-          script: `echo goodbye␊
-          `,
+          script: 'echo goodbye',
           type: 'sh',
         },
       ],
-    
+    }
 
 ## use readme
 
@@ -85,4 +81,4 @@ Generated by [AVA](https://ava.li).
           name: 'dev',
         },
       ],
-    }
\ No newline at end of file
+    }
diff --git a/test/snapshots/parseMarkdown.test.js.snap b/test/snapshots/parseMarkdown.test.js.snap
index 08ca79c..af90af1 100644
Binary files a/test/snapshots/parseMarkdown.test.js.snap and b/test/snapshots/parseMarkdown.test.js.snap differ
diff --git a/yarn.lock b/yarn.lock
index c61f5c4..16bfc0d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1085,7 +1085,7 @@ cross-spawn@^5.0.1, cross-spawn@^5.1.0:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
-cross-spawn@^6.0.5:
+cross-spawn@^6.0.0, cross-spawn@^6.0.5:
   version "6.0.5"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
   dependencies:
@@ -1427,6 +1427,18 @@ esutils@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.2.tgz#0abf4f1caa5bcb1f7a9d8acc6dea4faaa04bac9b"
 
+execa@^0.10.0:
+  version "0.10.0"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-0.10.0.tgz#ff456a8f53f90f8eccc71a96d11bdfc7f082cb50"
+  dependencies:
+    cross-spawn "^6.0.0"
+    get-stream "^3.0.0"
+    is-stream "^1.1.0"
+    npm-run-path "^2.0.0"
+    p-finally "^1.0.0"
+    signal-exit "^3.0.0"
+    strip-eof "^1.0.0"
+
 execa@^0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/execa/-/execa-0.7.0.tgz#944becd34cc41ee32a63a9faf27ad5a65fc59777"