It's hard to write a bash script of much import without using a pipe or two. Named pipes, on the other hand, are much rarer. Like un-named/anonymous pipes, named pipes provide a form of IPC ...
If you've used the command line much at all you know about I/O redirection for redirecting input to and/or output from a program. What you don't see all that often or that you may not be familiar with ...
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