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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

Redirecting output to file

Till now we have been sending the output of print and printf commands to stdout, that is, the screen. However, we can also redirect the output to files by using the redirection operator. Redirection is done after the print command. It is the same as we do in shell commands using redirection operator.

There are three forms of output redirection:

  • Output to file
  • Output appended to a file
  • Output through a pipe to another command

Redirecting output to a file (>)

This redirection operator (>) prints the items into the output file. Its syntax is as follows:

print items > demo

In this type of redirection, if the output file named demo exists, then it is erased before the first output is written...

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