This chapter is from the book
8.4 What You Should Know
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What is meant by a regular expression?
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How are the if and unless modifiers used?
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How do you change the forward slash delimiter used in the search pattern to something else?
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What does the s operator do?
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What is meant by a global search?
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When do you need the pattern binding operators, =~ and !~?
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What is the default pattern space holder?
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What is the _ _DATA_ _ filehandle used for?
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What do the ieg modifiers mean?