title: Cannot use dex2jar on my mac: permission denied
body: <p>I downloaded dex2jar and now trying to use it, but if I type 'sh d2j-dex2jar.sh' it shows the following message.</p>
  
  <pre><code>d2j-dex2jar.sh: line 36: ./d2j_invoke.sh: Permission denied
  </code></pre>
  
  <p>At first I thought that the permission was denied because the programme required the root permission, so I also tried adding 'sudo' to the command, and it did not work either. How should I solve this problem?</p>