Visit the
sudo
Web page at Courtesan Consulting
http://www.courtesan.com/sudo/
Pseudo, shareware by Brian R. Hill, launches Aqua applications as the superuser or root.
http://personalpages.tds.net/~brian_hill/pseudo.html
Marc Liyanage's page of Unix software includes MySQL, packaged for Mac OS X.
http://www.entropy.ch/software/macosx/
Admin.com is the companion site to
UNIX System Administration Handbook,
by Evi Nemeth, Garth Snyder, Scott Seebass, and Trent R. Hein (Prentice Hall, 2000).
http://www.admin.com/
Unix Guru Universe is the official home page for Unix system administrators.
http://www.ugu.com/
This link will bring you to "Mac OS X 10.0: About the root User and How to Enable It" from Apple's Tech Info Library.
http://til.info.apple.com/techinfo.nsf/artnum/n106290
SecureMac.com includes security lessons and information for Mac OS X.
http://www.securemac.com/