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Top Forums Shell Programming and Scripting search 3 file and write to 4th file (a bit complex) Post 302484057 by Scrutinizer on Wednesday 29th of December 2010 01:03:35 PM
Old 12-29-2010
Code:
awk 'NR==FNR{A[$3,$2]=$4;next} NF>2{for(i=3;i<=NF;i+=3)$(i+2)=A[$i,$(i+1)];B[$1,$2]=$0;next} B[$1,$2]{print B[$1,$2]}' OFS='\t' ip-port.txt lookup.txt rollbackip.txt

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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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