Hmmmm... I'm a firm believer that bash is the one true
shell. However, I usually install tcsh on all the boxes
I setup, just for those people who prefer tcsh, and so that
any shell scripts written in tcsh still work. As with most
things I take the approach of each to his own.
I think it's just plain idiotic to have /bin/sh point to
/bin/tcsh (it's probably worse than not having bash installed
at all) - it will break scripts bad, real bad!
I have come across some system scripts written in ksh.
That was kinda nasty, not exactly a standard shell, I had
to install it on 30 odd machines once they had been
deployed. Just as well I had
written an automatic software distribution system!
(Yes, I rewrote the wheel...)