Karl Fogel cofounded Cyclic Software in 1995. He now works as a programmer in Chicago, IL and is a member of the CVS development team. Moshe Bar (Tel Aviv, Israel) is a Linux developer and project manager with a Linux and Unix consulting business. He has written three Linux books and is a columnist for Byte Magazine. In addition, he's written numerous articles for magazines such as Linux Magazine, Linux Journal, UnixWorld, and Network Computing. He holds a Ph.D. in computer science.