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1.1 ! root 1: .TL ! 2: PREFACE TO THE TENTH EDITION ! 3: .PP ! 4: This edition of the ! 5: .I "UNIX Programmer's Manual ! 6: appears on the twentieth ! 7: anniversary of the original research ! 8: system pioneered by ! 9: Ken Thompson and Dennis Ritchie. ! 10: It is dedicated to the memory of the late Lee McMahon, whose ! 11: influence pervades the system's approaches ! 12: to text processing and data networking. ! 13: .PP ! 14: As with previous editions, the manual ! 15: reports on the system as it exists ! 16: in its original home department at AT&T Bell Laboratories. ! 17: Although related to the commercial System V and the academic ! 18: BSD systems, the research system is just what its title implies. ! 19: Some of the facilities ! 20: have long since graduated from the lab into international ! 21: commerce; others are experiments in progress. ! 22: Their appearance here does not constitute an ! 23: announcement of any official product. ! 24: .PP ! 25: Much has happened between the landmark seventh edition ! 26: of 1979, the last edition to be published as trade book, ! 27: and today. ! 28: The magnitude of the changes may perhaps be most ! 29: visible in the papers gathered in Volume 2, ! 30: more than half of which are completely new. ! 31: Even `old stuff' has been substantially updated. ! 32: For example, Volume 2 gives more up-to-date information ! 33: about the popular ! 34: .I troff ! 35: family of typesetting software than does any other published work. ! 36: .PP ! 37: Careful examination of Volume 1 will also show ! 38: enormous changes since the seventh edition. ! 39: The distinctive theme is distributed computing. ! 40: Ritchie's coroutine `stream' input/output and the ! 41: Datakit\(rg virtual circuit switch realization by ! 42: Lee McMahon and Bill Marshall provide the basis for ! 43: networking. ! 44: Peter Weinberger's network file system makes it painless. ! 45: Rob Pike's software for windowed bitmap terminals extends ! 46: the system right out to your fingertips, giving ! 47: a multiplexed interface to an already multiplexed system. ! 48: Dave Presotto's communication software brings ! 49: harmony to the Babel of real-world communications. ! 50: Norman Wilson's battles with entropy have made ! 51: the tenth edition system trimmer ! 52: than its less capable predecessors. ! 53: .PP ! 54: Besides the facilities just listed, ! 55: the manual describes dozens of completely new programs ! 56: in areas ranging from protocol verification to optical ! 57: character recognition. ! 58: Practically every page has been improved in ! 59: wording if not in function. ! 60: Instructive examples, often chosen to suggest nonobvious ! 61: uses of the system, have been added. ! 62: Sections 4, 5, and 8 have been expanded to ! 63: provide more inside wisdom about the system. ! 64: .PP ! 65: Over the course of years dozens of people at ! 66: Bell Laboratories have contributed ! 67: to the software here described. ! 68: Their work, acknowledged in previous editions, is their ! 69: monument. ! 70: Acknowledgement is also made to the Regents of the ! 71: University of California for certain portions that ! 72: descend from work in the Department of ! 73: Electrical Engineering and Computer Science at ! 74: Berkeley. ! 75: Active contributors to this edition include, besides ! 76: those already mentioned, ! 77: H. S. Baird, ! 78: J. L. Bentley, ! 79: S. A. Browning, ! 80: L. L. Cherry, ! 81: W. R. Cheswick, ! 82: M. A. Derr, ! 83: T. D. S. Duff, ! 84: C. W. Fraser, ! 85: D. M. Gay, ! 86: P. Glick, ! 87: F. T. Grampp, ! 88: E. H. Grosse, ! 89: D. R. Hanson, ! 90: G. J. Holzmann, ! 91: A. G. Hume, ! 92: B. W. Kernighan, ! 93: T. Killian, ! 94: A. R. Koenig, ! 95: T. J. Kowalski, ! 96: W. T. Marshall, ! 97: M. D. McIlroy, ! 98: S. C. North, ! 99: S. Peeters, ! 100: R. Pike, ! 101: S. A. Rago, ! 102: J. A. Reeds, ! 103: R. Sethi, ! 104: B. Stroustrup, ! 105: H. W. Trickey ! 106: and others. ! 107: Their computing activities have been made possible by the smoothly running ! 108: machines and Datakit networks managed by P. Glick, ! 109: F. T. Grampp, W. T. Marshall, and E. J. Sitar. ! 110: E. H. Carter consulted on book production. ! 111: .sp 2 ! 112: .in 4.5i ! 113: A. G. Hume ! 114: .br ! 115: M. D. McIlroy ! 116: .br ! 117: October, 1989 ! 118: .in 0
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