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Full Discussion: awk common between files
Top Forums Shell Programming and Scripting awk common between files Post 303011331 by Don Cragun on Tuesday 16th of January 2018 07:13:47 PM
Old 01-16-2018
Quote:
Originally Posted by genome
Code has a bug somewhere. Pasting 20,000 wouldn't be possible.

Code:
FNR == 1

Should I be using this?
Posting 20,000 what wouldn't be possible?

We have no idea. You usually use the condition FNR == 1 to cause the associated action to be executed on the first line read from each input file. Is there any reason why you need to care about which file contained an input record?

Start by telling us what you are trying to accomplish. Then tell us what is wrong with the output being produced by the code you've shown us in post #1. Then, maybe, we can suggest ways to fix your code to get what you want.

The code you have shown us seems at first glance to be a slightly complicated way of removing all lines from a set of files that contain a duplicate field #1 value in the set of files you provide as input files to your awk script preserving the order in which those non-duplicated values were seen that uses more memory to get the job done than is needed.

How do you know that the output you have received is not correct? What would make the output convincing?
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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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