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Top Forums Shell Programming and Scripting Creating subset of a file based on specific columns Post 302821937 by smitra on Sunday 16th of June 2013 07:25:46 AM
Old 06-16-2013
Hello bartus11,
I am trying this...
Code:
smitra:TRFLP-RawData smitra$ awk 'NR==1{for (i=1;i<=NF;i++) if ($i~"^Peak.Area") {printf $i" ";a[i+1]=1};printf "\n"}
NR>1{printf $1" ";for (i=2;i<=NF;i++) if (i in a) printf $i" ";printf "\n"}' TRF_raw_data_reactor1.txt > test1.txt
smitra:TRFLP-RawData smitra$

or with csv file:
Code:
smitra:TRFLP-RawData smitra$ awk 'NR==1{for (i=1;i<=NF;i++) if ($i~"^Peak.Area") {printf $i" ";a[i+1]=1};printf "\n"}
NR>1{printf $1" ";for (i=2;i<=NF;i++) if (i in a) printf $i" ";printf "\n"}' TRF_raw_data_reactor1.csv > test1.txt
smitra:TRFLP-RawData smitra$

But somehow its returning a empty file..
No idea what did I do wrong
 

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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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