Select Code to Download

my ($shell, $code) = mystical_extraction_goes_here($check{CHECK_CODE})
+;
open my $fh, '-|', $shell, -c => $code or die "Can't run shell $shell:
+ $!";
my @return = <$fh>;
close $fh;

my @cmd = $check{SHELL};
if (exists $check{SH_OPTS}) {
...
}
open my $fh, '-|', @cmd or die "Can't run check code: $!";
#...