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The AWK Programming Language (1988)

door Alfred V. Aho, Brian W. Kernighan (Auteur), Peter J. Weinberger (Auteur)

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Weinberger in 1977, AWK is a pattern-matching language for writing short programs to perform common data-manipulation tasks. In 1985, a new version of the language was developed, incorporating additional features such as multiple input files, dynamic regular expressions, and user-defined functions. This new version is available for both Unix and MS-DOS. This is the first book on AWK. It begins with a tutorial that shows how easy AWK is to use. The tutorial is followed by a comprehensive manual for the new version of AWK. Subsequent chapters illustrate the language by a range of useful applications, such as: Retrieving, transforming, reducing, and validating data Managing small, personal databases Text processing Little languages Experimenting with algorithms The examples illustrates the books three themes: showing how to use AWK well, demonstrating AWKs versatility, and explaining how common computing operations are done. In addition, the book contains two appendixes: summary of the language, and answers to selected exercises.… (meer)
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Indeholder "Contents", "Preface", "Chapter 1: An Awk Tutorial", "1.1 Getting Started", " The Structure of an AWK Program", " Running an AWK Program", " Errors", "1.2 Simple Output", " Printing Every Line", " Printing Certain Fields", " NF, the Number of Fields", " Computing and Printing", " Printing Line Numbers", " Putting Text in the Output", "1.3 Fancier Output", " Lining Up Fields", " Sorting the Output", "1.4 Selection", " Selection by Comparison", " Selection by Computation", " Selection by Text Content", " Combinations of Patterns", " Data Validation", " BEGIN and END", "1.5 Computing with AWK", " Counting", " Computing Sums and Averages", " Handling Text", " String Concatenation", " Printing the Last Input Line", " Built-in Functions", " Counting Lines, Words, and Characters", "1.6 Control-Flow Statements", " lf-Else Statement", " While Statement", " For Statement", "1.7 Arrays", "1.8 A Handful of Useful "One-liners"", "1.9 What Next?", "Chapter 2: The Awk Language", " The Input File countries", " Program Format", "2.1 Patterns", " BEGIN and END", " Expressions as Patterns", " String-Matching Patterns", " Regular Enpressions", " Compound Patterns", " Range patterns", " Summary of Patterns", "2.2 Actions", " Expressions", " Control-Flow Statements", " Empty Statement", " Arrays", "2.3 User-Defined Functions", "2.4 Output", " The print Statement", " Output Separators", " The printf Statement", " Output into Files", " Output into Pipes", " Closing Files and Pipes", "2.5 Input", " Input Separators", " Multiline Records", " The getline Function", " Command-Line Variable Assignments", " Command-Line Arguments", "2.6 Interaction with Other Programs", " The system Function", " Making a Shell Command from an AWK Program", "2.7 Summary", "Chapter 3: Data Processing", "3.1 Data Transformation and Reduction", " Summing Columns", " Computing Percentages and quantiles", " Numbers with Commas", " Fixed-Field Input", " Program Cross-Reference Checking", " Formatted Output", "3.2 Data Validation", " Balanced Delimiters", " Password-File Checking", " Generating Data-Validation Programs", " Which Version of AWK?", "3.3 Bundle and Unbundle", "3.4 Multiline Records", " Records Separated by Blank Lines", " Processing Multiline Records", " Records with Headers and Trailers", " Name-Value Data", "3.5 Summary", "Chapter 4: Reports and Databases", "4.1 Generating Reports", " A Simple Report", " A More Complex Report", "4.2 Packaged Queries and Reports", " Form Letters", "4.3 A Relational Database System", " Natural Joins", " The relfile", " q, an awk-like query language", " qawk, a q-to-awk translator", "4.4 Summary", "Chapter 5: Processing words", "5.1 Random Text Generation", " Random Choices", " Cliche Generation", " Random Sentences", "5.2 Interactive Text-Manipulation", " Skills Testing: Arithmetic", " Skills Testing: Quiz", "5.3 Text Processing", " Word Count", " Text Formatting", " Maintaining Cross-References in Manuscripts", " Making a KWIC Index", " Making Indexes", "5.4 Summary", "Chapter 6: Little Languages", "6.1 An Assembler and Interpreter", "6.2 A Language for Drawing Graphs", "6.3 A Sort Generator", "6.4 A Reverse-Polish Calculator", "6.5 An Infix Calculator", "6.6 Recursive-Descent Parsing", "6.7 Summary", "Chapter 7: Experiments with Algorithms", "7.1 Sorting", " Insertion Sort", " Quicksort", " Heapsort", "7.2 Profiling", "7.3 Topological Sorting", " Breadth-First Topological Sort", " Depth-First Search", " Depth-First Topological Sort", "7.4 Make: A File Updating Program", "7.5 Summary", "Chapter 8: Epilog", "8.1 AWK as a Language", "8.2 Performance", "8.3 Conclusion", "Appendix A: AWK Summary", "Appendix B: Answers to selected Exercises", "Index".

Et spøjst tekstbehandlingssprog forfattet af tre kloge hoveder på AT&T. Sproget er ikke helt rart og nogle overraskelser gemmer sig i krogene af implementationerne, så kig evt efter "A Supplemental Document For AWK -or- Things Al, Pete, And Brian Didn't Mention Much".
Ellers er bogen faktisk udmærket med nyttige! eksempler strøet rundt omkring. AWK har inspireret Perl en hel del. Jeg foretrækker Perl, men en masse af mine programmer er inspireret af eksempler i den her bog. ( )
  bnielsen | Jun 11, 2012 |
Before Perl there was AWK and this book was great. Now we have Perl.... ( )
  alecclews | Jun 18, 2008 |
Although I bought this years ago, I didn't actually learn AWK until after I'd learned Perl (by which time, of course, I didn't really need AWK anymore.) So I'm really rating not the book (which is well written) but the ideas in AWK, which are so much a key part of Perl. ( )
  nillacat | Oct 11, 2006 |
This thin little paperback book cost me $45! But with it, I was able to work some minor miracles with AWK that saved my company thousands of dollars. If you have to do lots of searching or manipulation on text files, AWK is the way to go, and this book will make it happen. The best guide to AWK, bar none. ( )
  airship | Jul 7, 2006 |
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» Andere auteurs toevoegen

AuteursnaamRolType auteurWerk?Status
Aho, Alfred V.Auteurprimaire auteuralle editiesbevestigd
Kernighan, Brian W.Auteurprimaire auteuralle editiesbevestigd
Weinberger, Peter J.Auteurprimaire auteuralle editiesbevestigd
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Wikipedia in het Engels (1)

Weinberger in 1977, AWK is a pattern-matching language for writing short programs to perform common data-manipulation tasks. In 1985, a new version of the language was developed, incorporating additional features such as multiple input files, dynamic regular expressions, and user-defined functions. This new version is available for both Unix and MS-DOS. This is the first book on AWK. It begins with a tutorial that shows how easy AWK is to use. The tutorial is followed by a comprehensive manual for the new version of AWK. Subsequent chapters illustrate the language by a range of useful applications, such as: Retrieving, transforming, reducing, and validating data Managing small, personal databases Text processing Little languages Experimenting with algorithms The examples illustrates the books three themes: showing how to use AWK well, demonstrating AWKs versatility, and explaining how common computing operations are done. In addition, the book contains two appendixes: summary of the language, and answers to selected exercises.

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