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error on bad combination of parameters

error on bad combination of parameters

error on bad combination of parameters

#use warnings;
use strict;
use Getopt::Long;

my $level = 'full';
my $loc = 'disk';
my $disp ='bkp';

GetOptions( 'd=s'        => \ my $database,
            'i=s'        => \ my $servername,
            'level=s'     => \$level,
            'location=s' => \$loc,
            'disposition=s' => \$disp,

how to throw error when I execute this perl file with parameters combination like perl name.pl -level  -disposition
during execution if enter values for both these parameters how to throw error.
Please suggest, I am new to perl

RE: error on bad combination of parameters

Please stop creating multiple threads about what is basically the same problem.  You already have 6 threads going from the last few days, but only covering 2 subjects!

If it is invalid to specify a "level" and a "disposition", why do you have default values defined for both of them?

Does this do what you want?

CODE --> Perl

#!/usr/bin/perl -w

use strict;

use Getopt::Long;

my $loc = 'disk';
my $level;
my $disp;
my $database;
my $servername;

GetOptions( 'd=s'           => \$database,
            'i=s'           => \$servername,
            'level=s'       => \$level,
            'location=s'    => \$loc,
            'disposition=s' => \$disp,

die "Please specify either level or disposition, not both\n" if (defined($level) && defined($disp));

# assign defaults
$disp='bkp' if !defined($disp);
$loc='disk' if !defined($loc);

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