An lsof Tutorial / Primer (lsof 用法)

用習慣了 netstat，突然要用 lsof 還有點不太適用，上網找了一下教學，才發現 lsof 真的比較強，值得大家試試

http://dmiessler.com/study/lsof/
An lsof Tutorial / Primer


lsof is the Linux/Unix über-tool. I use it
most for getting network connection related information from a system,
but that's just the beginning for this amazing and little-known
application. The tool is aptly called lsof because it "lists open files". And remember, in Unix just about everything (including a network socket) is a file.