12-09-2011
Looks like you are mixing up shell with awk.
Shell does not know about $90. In awk this would be field $90, yes.
On the other side defining a shell variable which's name is consisting only of numeric characters does not work, so you are definetly mixing up things.
Also the function length() is an awk function.
I don't understand if you already extracted field 90 and it has a lot of spaces in it so it produces a length of 158 instead of 3 or if you have a complete line where field 90 is not even extracted yet?
Maybe post the line using code tags and tell if you only want to measure it's length or also get it's output printed, thanks.
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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)