Hey everyone, I just had an idea for a cool thread. Lets start a list of questions you have heard for a Linux related position interview. It always amazes me with some of the off-the-wall questions interviewers can come up with to 'test' your Linux knowledge. Usually they are highly esoteric, and require knowledge of not-oft used portions of our favorite OS. (Don't forget the answer to your question too!) Have fun!

I will start, here is one I got a while back:

Q: What are pipes, and how are they used?
A: A pipe is a chain of processes or commands that send the output (stdout) to the input (stdin) of the next process/command.

An example of their usage would be:

find /dir | grep filename
Would basically search a directory for a file named 'filename'