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Top Forums Shell Programming and Scripting Transposing rows and columns (pivoting) using shell scripting Post 302629769 by Franklin52 on Wednesday 25th of April 2012 05:23:29 AM
Old 04-25-2012
Quote:
Originally Posted by ksatish89
I would be glad if you explain me your code. Please!
If you never used awk an explanation shouldn't make any sense like I mentionend on my last post.
But if you persist:
Code:
awk -F, 'NR==1{n=split($0,a,FS);print $1;next}{for(i=2;i<=n;i++)print $1,a[i],$i}' file

Explanation:

awk -F, use a comma as field separator
'NR==1{n=split($0,a,FS);print $1;next} if NR==1 use the split function to get the values of the 1st fields in array a, print the 1st field and get the next record.
{for(i=2;i<=n;i++)print $1,a[i],$i}' loop from field 2 and print the 1st field the value of the element a[i] and field $i



Have a read of an awk tutorial for the used commands:

Awk - A Tutorial and Introduction - by Bruce Barnett
 

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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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