use Storable qw/retrieve/;
use Data::Dump qw/dump/;
-my $path = shift @ARGV || die "usage: $0 /path/to/lookup\n";
+my $path = shift @ARGV || die "usage: $0 /path/to/lookup\n" unless @ARGV;
-print dump( retrieve( $path ));
+print "# $_: ",dump( retrieve( $_ )),$/ foreach @ARGV;