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Top Forums UNIX for Dummies Questions & Answers Extract columns based on the first line of each column Post 302924812 by RudiC on Wednesday 12th of November 2014 01:01:29 PM
Old 11-12-2014
No attempts from your side? Pity...

Try
Code:
awk     'FNR==NR        {H[NR]=$1; MX=NR; next}
         FNR==1         {for (j=1; j<=MX; j++) for (i=1; i<=NF; i++) if (H[j]==$i) C[j]=i}
                        {for (i=1; i<=MX; i++) printf "%s\t", $C[i]
                         printf "\n"}
        ' file2 FS="\t" file1
gga_miR_3500    gga_miR_4600    gga_miR_500     gga_miR_30
ghhh    jy      vf      we
h6      56h     44r4    45t
9lgtr   (fer)           f433
f4      bf4
vfr
2rr

Please note that your columns are NOT in the sequence in which they appear in file2!
This User Gave Thanks to RudiC For This Post:
 

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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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