Pass command line arguments to awk Post: 302380494

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Top Forums Shell Programming and Scripting Pass command line arguments to awk Post 302380494 by kristinu on Tuesday 15th of December 2009 10:07:05 AM

12-15-2009

Registered User

Pass command line arguments to awk

I am trying to pass max as a sommand line argument when I call awk.

Made the modification in the BEGIN but it is not working

I'm getting an error as below:

Code:

awk: txsrx.awk:82: (FILENAME=jcd.tx FNR=4161) fatal: cannot open file `40' for reading (No such file or directory)

Somehow it is reading 40 and interpreting it as a file.

Code:

# 1: Absolute value of a number
function abs(val) {
    return val > 0 ? val : -val
}

# 2: Read file twice, set maximum S-R distance
BEGIN {
#    ARGV[ARGC++] = ARGV[ARGC-1]
    print "0." ARGV[0]
    print "1." ARGV[1]
    print "2." ARGV[2]
    print ""
    ARGV[ARGC++] = ARGV[2]
    ARGV[ARGC-2] = ARGV[ARGC-3]
    max = 40
    print ARGC
    print "0." ARGV[0]
    print "1." ARGV[1]
    print "2." ARGV[2]
    print "3." ARGV[3]
}

# 3: First time round, store source location
FNR == NR {
    />/ && idx[FNR] = ++i
    $2 || val[i] = $1
    next
}

# 4: Second time round, get source location
FNR in idx {
    v = val[idx[FNR]]
}

# 5: Calculate S-R distance
{ !/>/ && dist = abs( $1 - v ) }

# 6: Print only if S-R distance less than max, create third column
# For the print statement can also use { OFS = ""; print $0, $2; OFS = " " }
/>/ || dist < max && NF == 2 { sub(/[ \t]+$/, ""); print }

kristinu

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moosex::getopt::processedargv5.18

MooseX::Getopt::ProcessedArgv(3pm)			User Contributed Perl Documentation			MooseX::Getopt::ProcessedArgv(3pm)

NAME

       MooseX::Getopt::ProcessedArgv - MooseX::Getopt::ProcessedArgv - Class containing the results of process_argv

VERSION

       version 0.59

SYNOPSIS

	 use My::App;

	 my $pa = My::App->process_argv(@params);
	 my $argv_copy		= $pa->argv_copy();
	 my $extra_argv 	= $pa->extra_argv();
	 my $usage		= $pa->usage();
	 my $constructor_params = $pa->constructor_params();
	 my $cli_params 	= $pa->cli_params();

DESCRIPTION

       This object contains the result of a "process_argv" in MooseX::Getopt call. It contains all the information that "new_with_options" in
       MooseX::Getopt uses when calling new.

METHODS

   argv_copy
       Reference to a copy of the original @ARGV array as it originally existed at the time of "new_with_options".

   extra_arg
       Arrayref of leftover @ARGV elements that Getopt::Long did not parse.

   usage
       Contains the Getopt::Long::Descriptive::Usage object (if Getopt::Long::Descriptive is used).

   constructor_params
       Parameters passed to process_argv.

   cli_param
       Command-line parameters parsed out of @ARGV.

AUTHOR

       Stevan Little <stevan@iinteractive.com>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2007 by Infinity Interactive, Inc.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

perl v5.18.2							    2013-11-30					MooseX::Getopt::ProcessedArgv(3pm)