How tail works on a large file?

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How tail works on a large file?

From:	Peng Yu
Subject:	How tail works on a large file?
Date:	Sat, 22 Aug 2020 05:45:06 -0500

Hi,

I tried to tail a large file (2.8GB) to get is last 10 lines. It runs very fast.

How is this achieved? Does tail do it differently between a file
(random disk access) and a pipe (sequential disk access)? Thanks.

-- 
Regards,
Peng

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