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Top Forums Shell Programming and Scripting awk not giving the output expected Post 303025812 by RudiC on Monday 12th of November 2018 03:08:21 PM
Old 11-12-2018
Quote:
Originally Posted by mkathi
. . .
Please advice where my thinking is wrong.
. . .

You're taking the scenic route, running multiple awk multiple unneeded times. On top:
- You're reading a line (from where? terminal, I presume?) to no avail - the variable is not used anywhere any more.
- You're assigning a variable a to no avail innthe first awk.
- You're using that a variable as a constant, independent of the condition you want applied, in the second awk.
- You're using the assignment operator = in lieu of the comparison operator ==.
- You're not giving awk the right field separator , .


Try instead:
Code:
awk -F, '{print $0, NR==1?"c4":($2!=$3?"mis":"")"match"}' OFS=, file
c1,c2,c3,c4
1,a,b,mismatch
1,b,b,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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