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  1. or download this
    #!/usr/bin/perl
use 5.010;
...
    say "child with PID $pid exited";
}
say "all childs exited";
  2. or download this
    #!/usr/bin/perl
use 5.010;
use strict;
...
    sleep 1;
}
say "all childs exited";
  3. or download this
    #!/usr/bin/perl
use 5.010;
use strict;
...
    sleep 1;
}
say "all childs exited";