i think i saw a link here about this--cant remember [Editor: I thought I remembered it, too, but can't find it anywhere!]. anyways, here's a really cool UNIX admin application i just downloaded. go to: The Moose's Apprentice page and check it out.
i haven't had time to "battle test" it yet, but the documentation is *excellent.* I'll use it tonight to restrict ftp users to their home directories...an app like this is precisely what ive been looking for. hope it lives up to its potential.
[Editor's note: Based on a quick five-minute look, this looks like a very impressive application. It gives you a GUI tool to manage many of the low-level UNIX tasks, such as cron jobs, FTP user access, allowed shells, and authorizing services by user and address. Worth a look-see if you're looking for a way of handling some of the UNIX stuff without diving into the terminal. A note of caution, though - this app will let you change things that you may not fully understand! Make sure you have some concept of what you're changing before you start tweaking the settings...]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20010829142010441