Shell Data Processing - Pipe (“command to command”redirection)

About

The pipe is a redirection operator held to transmit the stream output (stdout or sterr) of a command to another as stream input.

One or more pipe operators followed by command forms a pipeline.

Operator

Control operators Type of output transmit Description
| standard output The standard error is not transmit
|& standard error It is redirection shorthand for 2>&1 |

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