#!/usr/bin/perl
use warnings;
use strict;

my $module_file = 'Authen-SASL-Perl-NTLM-0.003.tar.gz';
my $module = $module_file;

$module =~ s/(.*)-.*/$1/;
print "$module_file => $module\n";
$module =~ s/-/::/g;
print "$module_file => $module\n";

print "$module ", try_load($module) ? "is":"is not", " installed.\n";

sub try_load {
  my $mod = shift;

  eval("use $mod");

  if ($@) {
    return(0);
  } else {
    return(1);
  }
}
__DATA__

Authen-SASL-Perl-NTLM-0.003.tar.gz => Authen-SASL-Perl-NTLM
Authen-SASL-Perl-NTLM-0.003.tar.gz => Authen::SASL::Perl::NTLM
Authen::SASL::Perl::NTLM is not installed.