"If you've arrived at Unix from the graphical user interface
(GUI) world of Windows or Mac OS, you're probably not familiar with
pipes and filters. Even among character-based interfaces, only a
few of them, such as MS-DOS, provide even rudimentary pipes and
redirection. This month, Mo Budlong walks you through the process
of piping and redirecting standard and error outputs."
"Redirection allows a user to redirect output that would
normally go to the screen and instead send it to a file or another
process. Input that normally comes from the keyboard can be
redirected to come from a file or another process."
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