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Full Discussion: Passing values out awk.
Top Forums Shell Programming and Scripting Passing values out awk. Post 44653 by tikual on Tuesday 9th of December 2003 12:32:34 PM
Old 12-09-2003
Ygor really a expert in awk!! I viewed his posts and I still need to learn from him/her.

I know that is one of method to set variable in awk.

And I know 3 methods to do that, maybe more than 3 ways then I may not know.
Method 1:
Variable was assigned after any actions, var cannot be read in BEGIN {} because action in BEGIN {} is started before reading the script.
awk '{print $0}' var=$1 filename

Method 2:
One variable with one -v, variable can be read in BEGIN{} and the script.
awk -v var1=$1 -v var2=$2 '{print $0}' filename

Method 3:
assign variable in the script body.
 

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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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