I suspect you will soon want to know:

How do I write a program that prints only words (not the entire line) in the file part3.txt (attached) on a word boundary that have the letter "p" or "P" in them?

the part3.txt is 

" CPAN stands for comprehensive Perl Archive Network.
^ and $ are used as anchors in a regular expression.
/pattern/ is a pattern match operator.
Perl is very easy to learn.
Enter 'H' or 'h' for help."

[download]

In that case, please see Pattern matching, and don't bother posting a new question.

Out of curiosity, what book are you using? It seems to be a poor one (based on the number of times these questions have been asked).

-driver8

Update: It appears you didn't get my message in time.

In reply to Re: Regex capture between word and punctuation by driver8
in thread Regex capture between word and punctuation by negzero7

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