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Full Discussion: Selective replace
Top Forums UNIX for Dummies Questions & Answers Selective replace Post 302758615 by Don Cragun on Sunday 20th of January 2013 09:00:43 AM
Old 01-20-2013
The sed command I gave you will not modify the field separators.

The awk script bipinajith provided changed the tabs used as field separators in your input to spaces in its output. Change his script to:
Code:
awk 'BEGIN{FS=OFS="\t"}$3=="FFF"{$3="seq"}1' infile

and your tabs will be preserved.

Last edited by Don Cragun; 01-24-2013 at 09:10 PM.. Reason: remove extraneous ]
 

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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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