It went pretty smoothly and on time.

It's very difficult because of the depth of detail required to work there. If you say that you know a skill really well, you'd better really know that skill—be as honest as possible. If you know at least one programming language really well enough to administer or automate a series of systems, then the interview should go smoothly for you.

Later on, you must know Data Structures and algorithmic theories and how to apply them in programming. Know Linux like the back of your hand—practice BSD.

Lastly, don't get discouraged if you don't get in on the first try. I asked my interviewer how many times it took him, and he said at least two, and some others three or more tries. It's all about how bad you want in. Take any failure as a learning lesson and apply again in the next six months (their wait time) and try again. Good luck!

This led me to use a regex to extract just the phone numbers from a contacts.txt file via Google Docs.