I have no problem with the UNIX command line being available in OS X, but it always annoys me that there are things that the GUI won't do. You should never NEED the command line for anything. The "classic" os was very good about letting you do everything you needed to do from the GUI. If you need the command line for ANYTHING, that should be a red flag that the graphical shell is inadequate or poorly designed. OS X is not as bad as KDE and GNOME in this respect (I have never been able to accomplish much of anything in Linux without the command line), but it does have serious limitations.
It should be noted that the old (OS 9 and Earlier) Mac OS also included a command line, which IMO was more arcane than UNIX is. But, it was also well concealed and unnecessary (unlike OS X).
It should be noted that the old (OS 9 and Earlier) Mac OS also included a command line, which IMO was more arcane than UNIX is. But, it was also well concealed and unnecessary (unlike OS X).