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Full Discussion: Conditional Looping In Files
Top Forums Shell Programming and Scripting Conditional Looping In Files Post 302816045 by Jotne on Monday 3rd of June 2013 07:42:59 AM
Old 06-03-2013
awk will read all files one by one and do all commands on all files
$1>9 && $1 <21 If column #1 have a value more then 9 and less then 21
Then create an array a with index of the FILENAME
The ++ tells that array should have one extra number for every hit.

After all file is counted then this END {for (i in a) {print i,a[i]}} will list all array that is created i in a and the value of them

PS array take some time to understand, but reading at testing will help a lot.
 

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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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