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Top Forums Shell Programming and Scripting How to replace all but the first 3 characters with sed? Post 302934783 by Scrutinizer on Tuesday 10th of February 2015 03:38:08 PM
Old 02-10-2015
Some more awk variations:
Code:
awk -F'^...' '{a=$2; gsub(/./,"*",a); print substr($0,1,3) a}' file

GNU:
Code:
awk '{gsub(/./,"*",$2)}1' FIELDWIDTHS="3 99" OFS= file

GNU/mawk/BSD awk
Code:
awk '{for(i=4; i<=NF; i++) $i="*"}1' FS= OFS= file


Last edited by Scrutinizer; 02-10-2015 at 11:09 PM..
 

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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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