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my $pid = open(my $FROM_KID, "-|");
die("Failed fork: $!") unless defined($pid);
...
    daemonize_self("", undef); # leave stdout alone
    exec "date" or die("Failed exec: $!");
}

use Cwd ();
use POSIX ();
...
    # change current working dir to root
    chdir(File::Spec->rootdir());
}