title: getting error while using "su" command
body: <p>I try to make batch file to run adb commands. I want to use <code>su -c</code>, but I get the error: </p>
  
  <pre><code> su: invalid uid/gid '-c'. 
  </code></pre>
  
  <p>I saw somewhere that my <code>su</code> version doesn't support <code>-c</code>, how can I enable this?</p>