Originally Posted by
Black Magix
Which flavor of Unix would be my first question...
HPUX, AIX, and Solaris are the heavy hitters right now from what I can tell.
Unix admin has a lot going for it and there are some core concepts that you'll need to understand in any *nix role such as disk, volume group, and logical volume management. For most Unix positions these days, you'll need to understand virtualization, lpar management and how they interact with a hypervisor. (Most large envrionments are virtualized these days, not bare metal.)
You'll need to understand filesystem structure, paging space utilization and what each one of those entail.
And that's the technical side of things....on the non technical side,
You'll need to understand problem solving and how to narrow down issues. You'll need to understand how to read and write documentation in a meaningful manner. Customer service often comes into play depending on the role you'll have.
That's about the quick 30 second brainstorm I could come up with
There's a lot involved with ANY sysadmin work.