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DOS疑难解答 & 问题讨论（解答室） » Question about using redirection operators and the pipe operator? [Help][Original]

Floor1　Xcat	Posted 2004-02-02 00:00
初级用户　Posts 2　Credits 106
Question about using redirection operators and the pipe operator?

Floor2　梅义	Posted 2004-02-21 00:00
初级用户　Posts 7　Credits 130
Redirection means changing the system's default input/output target to one defined by the user. For example: TYPE A.TXT will display the contents of A.TXT on the screen. With redirection: TYPE A.TXT>B.TXT then the contents of A.TXT will be sent into B.TXT instead of the screen.

Floor3　zhri	Posted 2004-02-24 00:00
高级用户　Posts 153　Credits 665
Actually, what our friend is talking about is input/output redirection. Redirection generally uses > and >>. The former will overwrite existing contents, while the latter appends. \| this thing is the pipe. Its function is to use the output of the program command on the left as the input of the program command on the right. For example: dir \| find "" This is used to display each subdirectory in the current directory.