title: Editing .plist file
body: <p>I'm developing an app for jailbroken phones. I'm new to Obj-c. I want to:</p>
  
  <ol>
  <li><p>Read a plist file in /var/mobile/Library/Preferences [specifically com.apple.assistant.plist] (Jailbroken, remember?)</p></li>
  <li><p>Change the string for the key, "Hostname".</p></li>
  <li><p>Save the plist file.</p></li>
  </ol>
  
  <p>Then I plan to throw the code in a IBAction and link it to a button in IB.</p>
  
  <p>Does anyone know how to achieve this? Can you post the code for it?</p>