Manipulating Files

I need a code that allows me to manipulate files within my app. Could anybody help me with suggestions?
Thanks [import]uid: 32005 topic_id: 8580 reply_id: 308580[/import]

http://developer.anscamobile.com/content/file-io

c [import]uid: 24 topic_id: 8580 reply_id: 30814[/import]