Linux Command lsof to view the current system Io status

On Linux, you can run the lsof command to view the files currently used by the system, or view the network socket communication.

 

$ Lsof view all system I/O operations

$ Lsof/etc/passwd

$ Lsof-P <pid> to view the IO used by the specified process. You can use this command to view the 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 the network connection of a specified Protocol

 

$ Lsof-u <user> View operations of a user