get it here. Downloading it right now! Remeber the people who were complaining about all the eye-candy in os-x, well it seems with this utility you can turn it off.
Besides, if StuffIt couldn't open it, then I doubt that the Unix utility would work either. The file was corrupt. So, since StuffIt Expander comes with OS X, why mess with the command line?
Oh that's right, some of you cyber geeks just like to show off.