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Full Discussion: Add 1 million columns
Top Forums UNIX for Dummies Questions & Answers Add 1 million columns Post 302916181 by RudiC on Monday 8th of September 2014 04:39:41 AM
Old 09-08-2014
A million fields per line is quite ambitious, and I'd wonder what it be for. This
Code:
awk '{for (i=7; i<=10000; i++) $i="0"}1' file1

is quite lengthy already, for i<=32767 it takes ages, and for i > 32768 it fails (on my system).
Try this
Code:
awk '{printf "%s", $0; for(i=7;i<=1000000;i++) printf " 0"; printf "\n"}' file1

 

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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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