If all their systems are unix, you better know the basics. There is nothing legacy about it, unix and its various flavors are still the most widely used server platform in the world.
Our development and production servers at work are all unix boxes, and while I don’t do sys admin type work, I still need to be able to write little scripts, use things like cvs, vi, sed, grep, chron, change permissions on files, that sort of thing. Routine, daily work. If experience with unix is not on someone’s resume, they get tossed in the round file.
If you are just starting out, I’d recommend an online linux tutorial for command line—any will probably do to get you started. GUIs are nice, but knowing many of the basic commands from a command line interface (CLI) is necessary.
thx, got it. what is the big draw of this thing anyway? Open source? Why doesn’t that make it a greater security risk? I know I’m missing something key here.