May 26, 2018
Lists information about open files (similar to fstat(1))
Lsof LiSt Open Files lists information about files that are open by the running processes. An open file may be a regular file, a directory, a block special file, a character special file, an executing text reference, a library, a stream or a network file Internet socket, NFS file or Unix domain socket.
See also fstat1 in the base system.