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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 the root user or users with the dtrace_kernel  privilege  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 verbose 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)