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Perl in a Nutshell

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b [line] [condition]

Sets a breakpoint at line, which must begin an executable statement. If line is omitted, sets a breakpoint on the line that is about to be executed. condition, if given, is evaluated each time the statement is reached, and a breakpoint is taken if condition is true:

b 237 $x > 30
b 33 /pattern/i

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