lsof(8): open files - Linux man page
Lsof revision N lists on its standard output file information about files opened by processes for the following UNIX dialects: ... Name lsof - list open files Synopsis lsof [ -?abChlnNOPRtUvVX] [ -A A] [ -c c] [ +c c] [ +|-d d] [ +|-D D] [ +|-e s] [ +|-f ...