-Instead
-of determining and creating a device node based on a sysfs dev
-entry as done for the \fB\-s\fP, send SG_IO commands to
-\fBdevice\fP, such as \fB/dev/sdc\fP.
-This argument should also be used when invoked via udev to avoid problems
-with creation of temporary files on not-yet writable directories.