What are pipes and filters in Unix?

1.	What are pipes and filters in Unix?
Answer» Pipes – a pipe connects small commands together to execute a COMPLETE complex task. Pipe symbol is ‘\|.’ The flow of data through the pipe is from left to right. Example – $ cat names.txt \| grep “Sam” \| TEE sam.txt \| wc -1 Filter – FILTERS are used to MODIFY the output of a command. Examples of filters are grep, sort, more, less, cat, cut and so on.

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