File: coreutils.info, Node: Redirection, Next: File name manipulation, Prev: Conditions, Up: Top 17 Redirection ************** Unix shells commonly provide several forms of “redirection” – ways to change the input source or output destination of a command. But one useful redirection is performed by a separate command, not by the shell; it’s described here. * Menu: * tee invocation:: Redirect output to multiple files or processes.