Hans;
Sorry, it was a rhetorical agreement, same as "yes". Ambiguous, like in this video:
http://www.youtube.com/watch?v=6JrIYR8jArk
Actually, not: it is just a shortcut to become root; try 'sudo -s'.
However, sudo is a tool to protect the installation against unauthorised modifications.
Though restrictions can be implemented, that is not so in Mac OS X. In addition, when one does a 'sudo', it is valid for a few minutes, which can be exploited by malware, by trying every minute if the user has enabled root permissions.
On the other hand, whenever you install something on Mac OS X, and is asked for the password, one is in effect doing the same thing as a 'sudo', becoming root. So one should never do that unless one trust the software.
FYI: Though it derives from FreeBSD, it is now certified UNIX (Intel 1.5 and later).
I suspect he has absolutely no knowledge about the console (Terminal). Therefore, to start with it, it might be safest to put it into ~/bin/.
It is good with this discussion - ChucK with strange downloading comments, is directed to the console-savvy user, in effect shutting others out.