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Top Forums Shell Programming and Scripting Why sum of recs in awk don't match total rec count? Post 302772745 by mjf on Tuesday 26th of February 2013 04:03:16 PM
Old 02-26-2013
Why sum of recs in awk don't match total rec count?

I'm using awk to determine if a field starting in position 604 for length of 10 is not equal to ALL spaces. It's searching several files which are in the current directory.

The below awk indicates that there are 84 records on all files where this field IS NOT equal to ALL spaces ( there are 10 spaces between the quotes).

Code:
 
awk 'substr($0,604,10)!="          " {print substr($0,604,10)}' LPM_BENE_BATCH_*.txt | wc -l
84

I then want to run the negate of the above to validate against the total record count of all files.
The below awk indicates that there are 444 records on all files where this field equals all spaces.

Code:
 
awk 'substr($0,604,10)=="          " {print substr($0,604,10)}' LPM_BENE_BATCH_*.txt | wc -l
444

But when I count all records on all the same files the above 2 awk commands are searching I get 1 less record then when I sum the above counts (84+444 = 528).

Code:
 
wc -l LPM_BENE_BATCH_*.txt 
527 total

What are some factors that could cause my total to not match?
 

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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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