SysAdmin skill categories

In my efforts to generate an SA skills matrix, I’ve discovered that we haven’t managed to quantify what we do in categories in a clear and consistent manner. Therefore, I’m calling on other SAs to help me build this list. The results of my efforts will be returned to the community, as well, so let’s all put a little in and get a lot out!

Below is my unordered preliminary list of general categories. This particular list is Unix focused, but most of the categories apply to all system administration.

security
backups
storage
user administration
solaris
linux
HP-UX
AIX
networking
mail
printers
databases
performance tuning
automation
programming