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In [[computing]], '''redirection''' is a form of [[interprocess communication]], and is a function common to most [[command-line interpreter]]s, including the various [[Unix shell]]s that can redirect [[standard streams]] to user-specified locations.
In [[Unix-like]] operating systems, programs do redirection with the {{mono|[[dup2]](2)}} [[system call]], or its less-flexible but higher-level [[Standard streams|stdio]] analogues, {{mono|[[freopen]](3)}} and {{mono|[[popen]](3)}}.<ref>https://www.gnu.org/software/libc/manual/html_mono/libc.html</ref>
==Redirecting standard input and standard output==
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