sed & awk
Dale Dougherty
Reading Time
at 250 WPM7h 14m
The average reader, reading at a speed of 250 WPM, would take 7h 14m to read sed & awk.
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15
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434
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sed & awk
by Dale Dougherty, Arnold Robbins
Published
1997
Publisher
O'Reilly Media
Pages
434
ISBN-13
9781449396602
Description
<i>sed & awk</i> describes two text processing programs that are mainstays of the UNIX programmer's toolbox.<i>sed</i> is a "stream editor" for editing streams of text that might be too large to edit as a single file, or that might be generated on the fly as part of a larger data processing step. The most common operation done with <i>sed</i> is substitution, replacing one block of text with another.<i>awk</i> is a complete programming language. Unlike many conventional languages, <i>awk</i> is "data driven" -- you specify what kind of data you are interested in and the operations to be performed when that data is found. <i>awk</i> does many things for you, including automatically opening and closing data files, reading records, breaking the records up into fields, and counting the records. While <i>awk</i> provides the features of most conventional programming languages, it also includes some unconventional features, such as extended regular expression matching and associative arrays. <i>sed & awk</i> describes both programs in detail and includes a chapter of example <i>sed</i> and <i>awk</i> scripts.This edition covers features of <i>sed</i> and <i>awk</i> that are mandated by the POSIX standard. This most notably affects <i>awk</i>, where POSIX standardized a new variable, CONVFMT, and new functions, <i>toupper</i>() and <i>tolower</i>(). The CONVFMT variable specifies the conversion format to use when converting numbers to strings (<i>awk</i> used to use OFMT for this purpose). The <i>toupper</i>() and <i>tolower</i>() functions each take a (presumably mixed case) string argument and return a new version of the string with all letters translated to the corresponding case.In addition, this edition covers GNU <i>sed</i>, newly available since the first edition. It also updates the first edition coverage of Bell Labs <i>nawk</i> and GNU <i>awk</i> (<i>gawk</i>), covers <i>mawk</i>, an additional freely available implementation of <i>awk</i>, and briefly discusses three commercial versions of <i>awk</i>, MKS <i>awk</i>, Thompson Automation <i>awk</i> (<i>tawk</i>), and Videosoft (VSAwk).
Subjects
The AWK programming language
sed & awk
Effective awk Programming
Unix text processing
UNIX-Werkzeuge zur Textmusterverarbeitung
Unix awk and sed programmer's interactive workbook
Frequently Asked Questions
How many pages are in sed & awk?
This edition of sed & awk has approximately 434 pages. Please note, this is an estimate and the exact page count can vary between hardcover, paperback, and e-book versions.
How long does it take to read sed & awk?
For most readers, sed & awk typically takes between 9h 3m and 6h 2m to complete. This is based on the book's length of approximately 108,500 words and common reading speeds.
Here's a detailed breakdown: • Continuous reading at 250 WPM: approximately 7h 14m of focused reading • Casual reading (30 minutes/day): you could finish in roughly 15 days • Estimated word count: 108,500 words
Your individual reading time will vary based on your personal reading pace, the amount of daily reading time, and your familiarity with the subject matter.
What is the word count of sed & awk?
The estimated word count for sed & awk is approximately 108,500 words. This figure is calculated using industry-standard methods that consider genre-specific word density patterns, typical formatting and layout characteristics, and standard words-per-page ratios for published books.
This is an approximation — actual word count may vary based on font size, formatting, edition, and the presence of illustrations or charts.
Who is the author of sed & awk?
sed & awk was written by Dale Dougherty, Arnold Robbins.
When was sed & awk published?
The publication date for this specific edition is 1997. The original work may have been published on a different date.