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Because sharing information and transferring files among computers are so integral to everything we do, Perl offers a number of functions to obtain network information in your program. In order to write programs utilizing interprocess communication (sockets, message queues, etc.), it is essential to understand some of the basic terminology associated with the network. The following discussion is merely an introduction to some of the common networking vernacular, so that when you try to dissect or write Perl programs that require these functions, you will not have to search through all your C books or wade through the manual pages to figure out what is going on.
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