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Top Forums Shell Programming and Scripting Add 8 columns at the end of .csv file using awk Post 302939122 by Zam_1234 on Monday 23rd of March 2015 02:59:37 AM
Old 03-23-2015
Quote:
Originally Posted by MasWag
Hello Zam_1234,
How about this?
Code:
awk 'BEGIN{FS=",";RS="\n";OFS=",";ORS="\n";} {for (i=1;i<=8;++i){$(16+i)=$(i+8)*100;}}1' file.csv > newfile.csv

This worked. But why didn't the one I had worked? Seems like only change is I was using "NF" and you use the hardcoded number "16".

Also, if the number of columns change in the future, what is way to do this robustly.

:-)
 

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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). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWgawk | +--------------------+-----------------+ |Interface Stability | Volatile | +--------------------+-----------------+ NOTES
Source for gawk is available on http://opensolaris.org. Free Software Foundation Nov 3 1999 IGAWK(1)
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