System Programming with C and Unix

Contents Preface ix 1 Introduction 1 1.1 What is System Programming? 1 1.2 The Three Tools 5 1.3 How to Debug 20 1.4 Program Development 31 1.5 Review of C 35 Questions and Exercises 41 2 Bits, Bytes, and Data Types 45 2.1 Bit Models 45 2.2 Bitwise Operations 57 2.3 Memory Map 65 Questions and Exercises 68 3 Arrays and Strings 73 3.1 Arrays 74 3.2 Strings 79 3.3 String Library Functions 83 3.4 Command Line Arguments 92 Questions and Exercises 94 4 Pointers and Structures 103 4.1 Pointers 103 4.2 Using Pointers 108 4.3 Structures 118 4.4 Using Structures 121 Questions and Exercises 127 5 Input/Output 135 5.1 Streams 136 5.2 Buffers 143 5.3 Pipes 145 5.4 Files 153 5.5 Devices 161 Questions and Exercises 164 6 ProgramManagement 171 6.1 Program Building 172 6.2 Code Organization 185 6.3 Program Distribution Methods 201 Questions and Exercises 204 7 System Calls 213 7.1 Families of Operations 214 7.2 Libraries and System Calls 215 7.3 Process System Calls 217 7.4 Signal System Calls 229 7.5 Socket System Calls 236 Questions and Exercises 251 8 Libraries 255 8.1 Using a Library 256 8.2 Purpose of Libraries 261 8.3 The C Standard Library 263 8.4 The Curses Library 265 8.5 The X Library 275 8.6 Making a Library 288 8.7 Library Pitfalls 291 Questions and Exercises 292 9 Scripting Languages 299 9.1 Using Scripting Languages 301 9.2 Shell Scripting 305 9.3 Perl 320 9.4 MATLAB 333 9.5 Discussion 347 Questions and Exercises 348 A ASCII Table 351 B Common Shell Commands 355 C System Programs 357 Index 361

Adam W. Hoover received a B.S. in Computer Engineering in 1992, a M.S. in Computer Engineering in 1993, and a Ph.D. in Computer Science & Engineering in 1996, all from the University of South Florida. In 1996, he joined the Electrical and Computer Engineering Department at the University of California, San Diego, as an Assistant Project Scientist and Visiting Lecturer. In 1998, he received the department's Honorary Graduate Teaching Award. In 1999, he joined the Electrical and Computer Engineering Department at Clemson University, where he is currently an Associate Professor. Dr. Hoover is an active Member of the Institute for Electrical and Electronics Engineers (IEEE), and co-founder of EyeDx, a company dedicated to preventative screening of children's vision. Dr. Hoover's research interests are in the area of intelligent systems, with an emphasis on tracking, embedded systems, and medical informatics.