Command watching opened files by processes in FreeBSD

[O. Hartmann]

Bill Moran wrote:
> In response to "O. Hartmann" <ohartman at mail.zedat.fu-berlin.de>:
>
>   
>> Hello out there,
>> does FreeBSD has a nativ root-restricted facility watching opened files
>> of a process or process group (like lsof or filemon)?
>>     
>
> Is fstat what you're looking for?
>
>   
Sorry for the noise.
Yes, fstat could possibly that I wanted it for, but is there a way to
make it look like a continious watching a process opening and closing
files? fstat -p PID gives me a snapshot of the status quo as of the
second I enter the command but that menas I could miss the right time
point. Maybe something like ptrace will be better.

Thanks a lot for the pretty fast answers!

-- 
O. Hartmann