lsof command in operating systems Unix-like is a list of all files opened and also the process that those files will have opened at the disposal puts. lsof open source program is by Vic Abell written and supported.

files opened on a system can include a hard drive, etc., Pipe, etc., socket, internet and hardware that by various processes have been opened and are in use. One of the applications of this recipe can be achieved, which is due to the use of a file uncertain, it is possible to detach (Unmount) the hard drive is not present. With the list of files open by this command (and use the suitable filter for the output of the command), etc. can be realized that what process are using that particular file.