The tcpdump tool is an older tool that "sniffs" network packets from a network and either prints them to stdout or logs them to a file.

tcpdump工具是一个比较老的工具，它从网上“嗅探”网络数据包，打印到stdout或记录在一个文件中。

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Griffith discovered that when users spend too long editing an entry on Wikipedia, the site automatically logs them out of the system, so that when the comment is posted, it's instead linked with an unidentified IP address.

FORBES: The Wiki-Hacker Strikes Again

But in the modern world of business, it has become clear that there is gold in them thar logs.

FORBES: Splunk's Godfrey Sullivan on Overcoming Barriers to Operational Intelligence

To produce them, the company logs about 1, 400 acres of forest annually.

FORBES: IKEA Under Fire for Clearing Ancient Russian Forest