Linux command lsof View current system IO situation __linux

The lsof command on Linux allows you to view the files currently used by the current system and, of course, to view network socket communications.

$ lsof View all system IO operations

$ lsof/etc/passwd View process usage of the file system

$ lsof-p <pid> View the IO situation used by the specified process, which can often be used to view files opened by the process.

$ LSOF-I@AAA.BBB.CCC View a network connection

$ lsof-itcp@aaa.bbb.ccc:ftp-data View Network connections for a specified protocol

$ LSOF-I4 or LSOF-I6 view network connections for a specified protocol

$ lsof-u<user> View the actions of a user