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Top Forums Shell Programming and Scripting How to extract entire stanza using awk? Post 303023835 by bakunin on Sunday 23rd of September 2018 03:02:44 PM
Old 09-23-2018
Quote:
Originally Posted by RudiC
How are those files created?
These files denote chess games and are called PGN (portable game notation).

Quote:
Originally Posted by prvnrk
I find it extremely hard to learn awk and is highly confusing.
awk is a complete programming language, but its main design goal was to work on table-based data. Each awk-program has three sections:

- one section (BEGIN) is executed before any data are read - think about printing a header

- one is executed for each line of the input data and consists of rules. A "rule" basically is a list of commands and a description of a text pattern: if the line matches the text pattern the commands are executed, if not then not

- one section (END) is executed after all data in the input file/data stream is processed - think of writing a footer and eventually totals, etc..

In my opinion the best book about awk (and sed - they have a lot in common) is "awk & sed" by Dale Dougherty, published by O'Reilly.

I hope this helps.

bakunin
 

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IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME
igawk - gawk with include files SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ... igawk [ all gawk options ] [ -- ] program-text file ... DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1). AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like @include getopt.awk in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path. OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports. EXAMPLES
cat << EOF > test.awk @include getopt.awk BEGIN { while (getopt(ARGC, ARGV, "am:q") != -1) ... } EOF igawk -f test.awk SEE ALSO
gawk(1) Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995. AUTHOR
Arnold Robbins (arnold@skeeve.com). Free Software Foundation Nov 3 1999 IGAWK(1)
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