Tài liệu Expert Shell Scripting

About the Author . xv
About the Technical Reviewer xvii
Acknowledgments xix
Introduction . xxi
PART 1 ■ ■ ■ Basic Scripting Techniques
■CHAPTER 1 Shell Script Debugging 3
■CHAPTER 2 Standard Function Library 13
■CHAPTER 3 Date and Time Manipulation 19
■CHAPTER 4 Comparisons and Tests 25
■CHAPTER 5 Accepting Command-Line Options, Switches, and Parameters 31
■CHAPTER 6 Testing Variables and Assigning Defaults 37
■CHAPTER 7 Indirect Reference Variables 43
■CHAPTER 8 Shell Process Tree . 49
■CHAPTER 9 Data Redirection . 59
■CHAPTER 10 Piping Input to read 65
PART 2 ■ ■ ■ System Interaction and Advanced Techniques
■CHAPTER 11 Math from the Shell 75
■CHAPTER 12 cron 81
■CHAPTER 13 Self-Linked Scripts . 87
■CHAPTER 14 Throttling Parallel Processes . 91
■CHAPTER 15 Command-Line Editing and History 99
■CHAPTER 16 Scripting from the Command Line 103
■CHAPTER 17 Automating User Input with expect . 107
■CHAPTER 18 User Input Timeout 115
■CHAPTER 19 Instant Keyboard Response 121
■CHAPTER 20 Directory Copying . 125
■CHAPTER 21 A Brief Tour of the X Display Environment 131
■CHAPTER 22 X Navigation Window 141
■CHAPTER 23 Command-Line E-mail Attachments 151
■CHAPTER 24 Text-Processing One-Liners . 157
■CHAPTER 25 Editing Files in Place 173
■CHAPTER 26 Evaluating Variables in a Flat File 181
■CHAPTER 27 Read Piped Input 183
■CHAPTER 28 Free-Format Output Using cat . 185
■CHAPTER 29 Automating Interactive Processes 187
PART 3 ■ ■ ■ Useful Scripts
■CHAPTER 30 Automating E-Mail with procmail 193
■CHAPTER 31 Process-Management Monitor . 201
■CHAPTER 32 Managing File Counts . 211
■CHAPTER 33 Processes Running from inittab 215
■CHAPTER 34 Automatic RCS 219
■CHAPTER 35 Colorful /proc Reporting . 223
■CHAPTER 36 Password-Aging Notification . 231
■CHAPTER 37 A Pseudo–shadow File 241
■CHAPTER 38 Linux Gold-System Build 245
■CHAPTER 39 System Snapshots 251
■CHAPTER 40 Removing Large Files and Log Rolling 261
■CHAPTER 41 Core Finder . 265
■CHAPTER 42 Network Adapter Failover . 267
■APPENDIX A Test Switches 273
■APPENDIX B Special Parameters . 275
■APPENDIX C Other Shell-Scripting Resources . 277
■INDEX . 281