osx man page for lastwords

lastwords(1m)							   USER COMMANDS						     lastwords(1m)

NAME
       lastwords - print syscalls before exit. Uses DTrace.

SYNOPSIS
       lastwords command

DESCRIPTION
       This  prints  the  last few system calls for processes matching the given name, when they exit. This makes use of a ring buffer so that the
       impact on the system is minimised.

       Since this uses DTrace, only users with root privileges can run this command.

EXAMPLES
       Catch last few syscalls for dying netscape processes,
	      # lastwords netscape

FIELDS
       TIME   time of syscall return, ns

       PID    process ID

       EXEC   process name (execname)

       SYSCALL
	      system call

       RETURN return value for the system call

       ERR    errno for the system call

BASED ON
       /usr/demo/dtrace/ring.d

DOCUMENTATION
       DTrace Guide "Buffers and Buffering" chapter (docs.sun.com)

       See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
       bose descriptions explaining the output.

EXIT
       lastwords will sample until a command with that name exits.

SEE ALSO
       dtruss(1M), dtrace(1M)

version 0.70							   Jun 08, 2005 						     lastwords(1m)