I finally figured out how to reset the Linux file permissions to resolve my file access issues. However, I did something foolish. Being rusty with Linux, I used chmod (via OS X's terminal) and forgot to include "rw" when setting execute permissions. Even worse, I was doing it for user, group and everyone at the same time, so the file is no longer visible. Does anyone know how I can get to the file now? Does it have to be done through the root account, and if so, how can I run chmod as root?