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

NAME
       lastwords - print syscalls before exit. Uses DTrace.

SYNOPSIS
       llaassttwwoorrddss ccoommmmaanndd

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  the  root  user  or  users  with  the
       dtracekernel privilege can run this command.

EEXXAAMMPPLLEESS
       Catch last few syscalls for dying netscape processes,
              # llaassttwwoorrddss nneettssccaappee


FFIIEELLDDSS
       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


BBAASSEEDD OONN
       /usr/demo/dtrace/ring.d


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

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

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

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




version 0.70                     Jun 08, 2005                    lastwords(1m)