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Top Forums Shell Programming and Scripting At text to field 1 of header row using awk Post 302978582 by cmccabe on Monday 1st of August 2016 01:36:06 PM
Old 08-01-2016
At text to field 1 of header row using awk

I am just trying to insert the word "Index" using awk. The below is close but seems to add the word at the end and I can not get the syntax correct to add from the beginning. Thank you Smilie.


Code:
awk -F'\t' -v OFS='\t' '{ $-1=$-1 OFS "Index"}$1=$1' file

current output
Code:
Chr    Start    End    Ref     Index
chr1    949608    949608    G    A     1

desired output
Code:
Index     Chr    Start    End    Ref     Index
  1       chr1    949608    949608    G    A

 

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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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