if "cd: 0:" means that it is attempting to cd into directory "0", then something must be wrong with the list, because the first scalar on that list should be 00112.

I'm guessing that error is from using split'',$foo;. It should be split ' ', $foo.

$ perl -E'say join ":", split "", "abc def"'
a:b:c: :d:e:f

$ perl -E'say join ":", split " ", "abc def"'
abc:def
[download]

my $dirs = `ls -d *`;
my @dirs = split ' ', $dirs;
[download]

chomp( my @dirs = `ls -d *` );
[download]

Update: hum, it's not really any simpler.