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Full Discussion: Select 2 columns and transpose row by row
Top Forums UNIX for Dummies Questions & Answers Select 2 columns and transpose row by row Post 302722265 by radoulov on Friday 26th of October 2012 03:08:00 PM
Old 10-26-2012
Code:
awk 'END {
  for (i = 1; i <= NF; i += 2)
    for (j = 0; ++j <= NR;)
      printf "%s", (d[j, i] OFS d[j, i + 1] (j < NR ? OFS : ORS))
  }
{
  for (i = 0; ++i <= NF;)
    d[NR, i] = $i
  }' OFS='\t' infile

Note that in some awk implementations NR and NF may not be available in the END block.
If you're using one of those, the script should be:

Code:
awk 'END {
  for (i = 1; i <= nf; i += 2)
    for (j = 0; ++j <= nr;)
      printf "%s", (d[j, i] OFS d[j, i + 1] (j < NR ? OFS : ORS))
  }
{
  for (i = 0; ++i <= NF;)
    d[NR, i] = $i
  nr = NR; nf = NF    
  }' OFS='\t' infile

 

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LEARN ABOUT CENTOS

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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