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Learning AWK Programming

You're reading from   Learning AWK Programming A fast, and simple cutting-edge utility for text-processing on the Unix-like environment

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Product type Paperback
Published in Mar 2018
Publisher Packt
ISBN-13 9781788391030
Length 416 pages
Edition 1st Edition
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Tools
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Author (1):
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Shiwang Kalkhanda Shiwang Kalkhanda
Author Profile Icon Shiwang Kalkhanda
Shiwang Kalkhanda
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Table of Contents (11) Chapters Close

Preface 1. Getting Started with AWK Programming FREE CHAPTER 2. Working with Regular Expressions 3. AWK Variables and Constants 4. Working with Arrays in AWK 5. Printing Output in AWK 6. AWK Expressions 7. AWK Control Flow Statements 8. AWK Functions 9. GNU's Implementation of AWK – GAWK (GNU AWK) 10. Practical Implementation of AWK

Using the split() function to create arrays

The built-in split() function can parse any string into elements of an array. The split(string, arr, fs) function splits the string value of str into fields and stores them in the arr array. The number of fields produced is returned as the value of the split function. The string value of the third argument, fs, determines the field separator. The syntax of split() functions is as follows, followed by a listed explanation of the elements involved:

n = split (str, arr, fs)

  • str: This is the input string to be parsed into the elements of the named arr.
  • arr: This is the name of the array.
  • fs: This is the separator character based on which the array elements are split. If the separator is not given, the elements are split based on the fs as the separator. The separator can be a single character of the regular expression.
  • n: This is the index...
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