Why I do have to retrieve guest history file?

为什么需要查看客人档案记录？

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The second line appends a shell's history to your history file when the shell exits.

第二行在shell退出时将shell的历史记录附加到您的记录文件。

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If your history file is large, you can run periodic checks by piping to tail first — for example, to check the last 1,000 commands, try.

如果历史记录文件比较大，您可以首先通过管道传输到tail来运行周期性的检查，例如，要检查最后的1,000条命令，可以尝试使用。

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George Burgess leads the International Shark Attack File at the Florida Museum of Natural History of the University of Florida.

VOA: special.2009.06.16

Children's favourite Teletubbies won the best pre-school category and the best schools' factual award went to the drama documentary History File: Nazi Germany.

BBC: News | Entertainment | Children crown best TV shows

"On that one prior time, he did a runaway, and we located him, so we don't have a longstanding history file on him, " Richardson said.

CNN: SHARE THIS

One main reason: The company had a history of religious devotion to proprietary file formats, and took years to release a digital audio player that could handle the ever-popular MP3 format.

FORBES: These Are The Six Reasons Companies Drop The Ball