Find open files on a filesystem

More lsof commands

• Find deleted files still held open
  lsof | grep '(deleted)'copy

  Find files deleted but still held open by processes (disk bloat)

• ss: show listening sockets
  ss -tlnpcopy

  Show TCP listening ports with process names

• ss: show all TCP connections
  ss -tanp | grep ESTABcopy

  Filter established TCP connections with process info

• ss: show UDP sockets
  ss -ulnpcopy

  List UDP listening ports with process names

• ss: socket stats summary
  ss -scopy

  Print socket usage summary by state

all 19 lsof commands →