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Full Discussion: awk - value assignment.
Top Forums Shell Programming and Scripting awk - value assignment. Post 59779 by videsh77 on Thursday 30th of December 2004 01:15:08 PM
Old 12-30-2004
Data awk - value assignment.

I am facing a strange situation with awk.
If I do variable substitution for substr it gives value starting from 9th char to
the end of record. Following is the command.
awk -v offset=9 -v length=4 '{ print substr($0,offset,length) }' filename

But for the same if I ommit assignment & harcode values in, it works as expected.
Following is the command
awk '{ print substr($0,9,4) }' filename

Can anyone tell me, where am I getting wrong?
 

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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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