This is an example of the
kill.d DTrace script,
FROM COMMAND SIG TO RESULT
2344 bash 2 3117 0
2344 bash 9 12345 -1
^C
In the above output, a kill -2 (Ctrl-C) was sent from the bash command
to PID 3177. Then a kill -9 (SIGKILL) was sent to PID 12345 - which
returned a "-1" for failure.