Well, without more specifics as to when the zero will appear, try this:

print if (/(^\s*|\s+)0/);  # A zero either: starting a line with possi
+ble whitespace in front, or
                                            anywhere in a line with ne
+cessary whitespace in front.
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Update: suaveant's suggestion, above, is simpler and works just as well:   print if (/\b0/);

kelan

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