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Top Forums Shell Programming and Scripting subtracting 1.5 from column using awk and saving the changes Post 302394469 by ac130pilot on Thursday 11th of February 2010 12:12:53 PM
Old 02-11-2010
subtracting 1.5 from column using awk and saving the changes

Code:
# foreach sub ( sub001 )
sub=sub001
cd /mnt/stor/smith/recog/$sub/event_files/timecorrected/
awk '{$1-1.5}' $sub_CR
end

What im trying to do is:
1. open a 1D file that consists of lists of integers in rows a columns
2. subtract 1.5 from each integer in the first column
3. save the file (same filename same directory) basically overwriting it.

What is my awk command missing?

Thanks!

Last edited by Scott; 02-11-2010 at 04:34 PM.. Reason: Code tags, please...
 

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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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