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Full Discussion: awk to look up values in File 2 from File 1, & printingNth field of File1 based value of File2 $2
Top Forums Shell Programming and Scripting awk to look up values in File 2 from File 1, & printingNth field of File1 based value of File2 $2 Post 303014075 by Chubler_XL on Sunday 4th of March 2018 04:37:39 PM
Old 03-04-2018
$0 is the current row, in this case it is a row from any file except the first file, because the previous command texts NR == FNR and for every row of the first file the global row number (NR) will equal the File row number (FNR) and within this test next is called so the rest of the program is never reached.

To keep the headers in the output you need something like this:

Code:
awk -F, '
NR==FNR { for (i=3;i<=NF;i++) arr[$1,i] = ","$i; next } 
FNR==1 { print $0 ",Choice ; next }
{ print $0 arr[$1,($2+2)] }' file1 file2

explanation:
row 1: capture file #1 fields into arr[] and skip rest of program for file #1
row 2: if this is row number 1 of this file print row plus ",Choice"
row 3: otherwise print row plus arr[] value for current item and response
 

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LEARN ABOUT DEBIAN

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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