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    Got a Score:5 Comment 2009-02-21

  • Posted a Comment 2009-02-20

  • Member of the 5 Digit UID Club 2009-03-27

  • Comedian 2009-03-27

  • Had a Comment Modded Up 2009-03-28

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egrep patterns are full regular expressions; it uses a fast deterministic algorithm that sometimes needs exponential space. -- unix manuals