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Top Forums Shell Programming and Scripting [Solved] Compare column data in all the rows Post 302861627 by Akshay Hegde on Wednesday 9th of October 2013 09:44:41 AM
Old 10-09-2013
One more awk approach you may try

Code:
$ cat test
AA|BB|CC|line1
AA|BB|CC|ine4
AA|BB|CC|line2
BB|CC|DD|line3
BB|CC|DD|line5

Code:
$ awk -F'[|]' '{++i;printf(!_[$1$2$3]++)?$0 ",":((++i)<3)?($1=$2=$3="")$4 "," : $4 RS;i--}' test

resulting
Code:
AA|BB|CC|line1,ine4,line2
BB|CC|DD|line3,line5


Last edited by Akshay Hegde; 10-09-2013 at 10:54 AM.. Reason: tag
 

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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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