my $days = 2;
my $keep_as_of = time - ( $days * 84600 );

my @old_files = (
    grep{ !-d
          && ! /\.zip$/i
          && ( stat( $_ ) )[9] < $keep_as_of
    }
    glob( "/path/to/directory/*" )
);

unlink @old_files;

print "The following files have been removed\n\n", join "\n", @old_files;