1. Understanding Inputs and Outputs So far, the data output has been sent to the monitor or sent to a file.
But sometimes, you may want to send specific data to the monitor and send specific data to a file. Now, let's see how to use that in a script. standard file descriptor Linux systems treat all objects as files.
Both output and input are processed as files. This file descriptor is a non-negative integer and a maximum of 9 file descriptors can be opened in one session.
In the bash shell, the ...
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원문 링크 : Chapter 10 Data Expression
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