One of the cool hidden features of OS X 10.1.x was
ncftp, which is a much better command line ftp client. In Jaguar (OS X 10.2), they seem to have removed the primary ncftp command from /usr/bin! So, before you upgrade, make sure you save /usr/bin/ncftp. Strangely enough all of the other ncftp auxilliary commands, such as ncftpget and ncftpput are still there and the version of the software hasn't changed. They just removed the one that you're most likely to use :(
[
Editor's note: It's true, ncftp appears to be gone. Luckily, the fine folks at
NcFTP Software have made a precompiled binary package available for OS X -- you can grab it from their
download page. Download the OS X disk image, mount the image, run the package installer, and it's done. I just tested this on my 10.2 installation and it works perfectly.]