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Top Forums Shell Programming and Scripting awk search and replace nth column by using a variable. Post 302963343 by rangarasan on Tuesday 29th of December 2015 02:50:52 AM
Old 12-29-2015
Couple of things, You don't need to use cat to pass the file content to awk. It's useless use of cat.

You can specify the single quote to get the shell variable interpolate.

Code:
awk -F, '{$2="\"'$TempVal'\""; print }' OFS=, file_name.txt

(Or)

You can use -v option to assign the shell variable data into awk variable and make use of the awk variable inside the awk block.

Code:
awk -F, -v t="\"$TempVal\"" '{$2=t; print }' OFS=, file_name.txt

-Ranga

Last edited by rangarasan; 12-29-2015 at 03:51 AM.. Reason: Format
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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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