Bill Bali is an author, technical writer, and magazine journalist who has worked with Unix since 1989 and Linux since 1994. He has had articles published in Linux journal and has written a dozen successful computer books. He is a member of the Northern Virginia Linux Users Group. Hoyt Duff writes about Linux as a columnist and regular contributor of reviews and tutorials for Linux Format magazine. He bas contributed to the Mandrake documentation as an editor and bas edited the English content of www.linuxnetmag.com, a Webzine.