I want to learn to use the shell and was wondering why this …

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著者: Jeremy C. Reed
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題目: I want to learn to use the shell and was wondering why this didn't do as expected

On Thu, 20 Feb 2003, Michael Havens wrote:

> Why did my version (sort mypasswd >mypasswd |cat mypasswd) erase it?

The shell deleted mypasswd (when you did ">mypasswd") before you tried to
sort it.

See Bill Jonas's email for good explanation.

Jeremy C. Reed
http://bsd.reedmedia.net/

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