I quickly wrote some sample code below that I hope would be more helpful to set your perl programming on the right track :-D

#!/usr/bin/perl
use Getopt::Long;
use Pod::Usage;  # Recomend to use Pod::Usage along with Getopt::Long
use strict;

# Parse command line arguments and assign corresponding variables
GetOptions
(
    'f|fruit=s'  => \( my $fruit  = undef ),
    'a|action=s' => \( my $action = undef ),
    'g|greet'    => \( my $greet  = undef ),
);

unless ( defined $action && defined $fruit )
{
    pod2usage( -exitval => 1, -output => \*STDERR );
}

# do greeting
print "Hello there!\n" if ($greet);

# multiple fruit possible
my @fruit = split /,/, $fruit;

foreach (@fruit)
{
    print "I will $action $_.\n";
    # etc...
}

exit(0);

__END__

=pod

=head1 NAME

fruit.pl

=head1 SYNOPSIS

fruit.pl [options]

=head1 ARGUMENTS

The -f and -a options are mandatory. The -g option is optional.

=over 4

=item B<-f|--fruit [name]>

Specify the fruit, multiple fruits possible, separate by comma

=item B<-a|--action [name]>

Specify the action to perform on fruit.

=item B<-g|--greet>

Print the greeting.

=back

=cut
[download]

Then you can run the program with command-line options:

perl ./fruit.pl -f apple,orange -a eat -g
perl ./fruit.pl --fruit banana -action sell
...
[download]

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