finddata.exe -b file.txt data.txt The tool can work 1) with only option b 2.)with only with option l 3.) or both

The below code forces to use both the options.Moreover my problem is when some doesn't enter the options (-b,-l).I need help on whenever there is an argument with no option. For example when the command is run like below

finddata.exe -b file.txt data.txt (note the missing -l before data.txt). 

use strict;
use warnings;
use Getopt::Std;

my %opts;

getopts('b:l:', \%opts);

if (! exists $opts{b} || ! exists $opts{l}) {
    die "Both -b and -l options are required\n";
}

print "-b: $opts{b}, -l $opts{l}\n";

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In reply to Re^2: How to make sure to print usage when the options are not entered? by perl_mystery
in thread How to make sure to print usage when the options are not entered? by perl_mystery

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