title: yarn run script with parameters
body: <p>How do I pass a parameter? When I run "yarn generate" it will make both a "-p" and a "test" directory. But it works well when I run "mkdir -p test" in bash. I tried to [-p] as well but it only creates that directory.</p>
  
  <pre><code>"scripts": {
      "generate": "mkdir -p test"
    }
  </code></pre>