Several others have taken a stab at answering your question. I hope they answered the question you really had in mind. However since your question was a bit vague, it seems to me that you might want to look at the following guides for posting questions:

[How (Not) To Ask A Question]

[How do I post a question effectively?]

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In reply to Re: matching a defined lenght by MonkE
in thread matching a defined lenght by harryC

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":

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