History of UNⅨ and linux UNICS PDP-11 UNIX Portable unix Berkeley UNⅨ Standard UNⅨ M|NⅨ · Linux Tanenbaum, Modern Operating Systems 3 e, (c)2008 Prentice-Hall, Inc. All rights reserved. 0-13-6006639History of UNIX and Linux • UNICS • PDP-11 UNIX • Portable UNIX • Berkeley UNIX • Standard UNIX • MINIX • Linux Tanenbaum, Modern Operating Systems 3 e, (c) 2008 Prentice-Hall, Inc. All rights reserved. 0-13-6006639