Lsof is an extremely powerful unix diagnostic tool. Its name stands for LiSt Open Files, and it does just that. It lists information about any files that are open by processes currently running on the system. It is useful for pinpointing which process is using each network socket. FAQ available
a36c30700b06192ff417d36a35c38568296e637a9febb2bb22d72d625e02f718