Pipelines
Learn how to combine several programs using a pipeline.
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The redirection operators are useful when we save data for manual analysis or processing. When we want to process data with another program, storing them in temporary files is inconvenient. Managing these files takes extra effort. We should remember their paths and remove them after usage.
Unix provides an alternative solution for transferring text data: a pipeline. This mechanism shares data between programs by passing messages. It doesn’t use the file system.
How pipelines work
The following example ...