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  1. or download this
    D:\Development> perl -MO=Deparse,-x3 -e "for ($i = 0; $i < 10; ++$i) {
+print $i;}"
$i = 0;
...
    ++$i
}
-e syntax OK
  2. or download this
        for ($i = 0; $i < 10; ++$i) {
        print $i;
    }
  3. or download this
        $i = 0;
    while ($i < 10) {
...
    } continue {
        ++$i
    }