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Full Discussion: for cicle and awk
Top Forums Shell Programming and Scripting for cicle and awk Post 302438526 by danile on Tuesday 20th of July 2010 03:41:24 AM
Old 07-20-2010
for cicle and awk
Hi,

I wrote the following script:

Code:
#! /bin/bash

for ((i = 1600; i < 3700; i = i + 100))

do

awk '{if ($16 > "'$i'"-101 && $16 < "'$i'") print $0 }' prova > prova1

done

which is supposed to print, from the original file "prova" in the new file prov1 , only the data that at the 16th column goes from 1500 to 3600. I need a for cilce because I nedd to do some operations separately on block 1500-1600, 1600-1700, and so on...
The script works bad, in the sense that It works until 1900, then from 2000 it got crazy. For example it considers 2800 < 2000.
Where do you think is the problem?
Last edited by pludi; 07-20-2010 at 04:57 AM.. Reason: code tags, please...
 

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LEARN ABOUT CENTOS

igawk

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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