iosnoop(1m) on macOS
The text 4786b7a26901, as Mac OS X 10.7.5, Mac OS X 10.7.4, Mac OS X 10.7.3, Mac OS X 10.7.2, Mac OS X 10.7.1, Mac OS X 10.7, Mac OS X 10.6.8, Mac OS X 10.6.7, Mac OS X 10.6.6, Mac OS X 10.6.5, Mac OS X 10.6.4, Mac OS X 10.6.3, Mac OS X 10.6.2, Mac OS X 10.6.1, Mac OS X 10.6 shipped it.
snoop I/O events as they occur. Uses DTrace.
Flags it lists
-
-A -
-D -
-a -
-d -
-e -
-f -
-i -
-m -
-n -
-o -
-p -
-s -
-t -
-v