02-28-2009
How cool was that!! It worked! Thanks!
Used this command:
gawk -F'\t' '{$8=$4;$4=_ }1' OFS='\t' myfile > Newfile
And got the desired output which my program reads as it should:
A*0201 Ireland Northern 46.8 0.274
A*0101 Ireland Northern 36.4 0.202
A*0301 Ireland Northern 26.3 0.143
But well I would like to understand it so that I would be able to use it sometime in a different but similar problem.
So if the -F'\t' part defines the fieldseperator what does the OFS='\t' part do and why is it necessary with both parts?
And what does the ;$4=_)1 part of the command do?
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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)