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redirection Last modified: Monday, December 24, 2001
(1) In operating system shells, redirection refers to directing input and output to files and devices other than the default I/O devices. By default, input generally comes from the keyboard or mouse, and output goes to the display monitor. With a redirection operator, you can override these defaults so that a command or program takes input from some other device and sends output to a different device. In DOS and UNIX systems, the redirection operators are < for input and > for output. For example, the DOS command sort < c:\list > c:\sorted takes input from a file called list, sorts it, and sends output to a file called sorted. (2) See meta refresh.
	Related Categories File Management Related Terms default device DOS file multitasking operating system operator shell UNIX