How to get filename of an open file descriptor
rwatson at FreeBSD.org
Fri Nov 16 06:46:04 PST 2007
On Wed, 14 Nov 2007, Skip Ford wrote:
>> I agree regarding the duplication with ps(1) -- however, I'm generally of
>> the opinion that ps(1) is overburdened as tools go, and that the goals are
>> actually somehwat different--procstat(1) intentionally doesn't have the
>> ability to generate a list of processes, for example, taking pids
>> explicitly as the argument; likewise, historically ps(1) has not been
>> interested in printing more than one line per process (although I think -h
>> changed this). I'll do a bit more investigation as to how easily it can be
>> wedged in, and do recognize the concern here.
> I understand, and I sort of knew that from the beginning which is why I
> didn't provide feedback immediately. I don't have a suggestion as to what I
> think should be done.
> While procstat(1) currently takes a list of pids, I wouldn't be surprised if
> somebody adds code to list all processes, unless you block it. I think it
> would be useful, especially since some of it's options produce single-line
> per pid output, such as credentials.
> The two utilities do provide different information, it's just a little odd
> to have two utilities with basically the same name. But I can't think of a
> more appropriate name for procstat(1).
FWIW, it looks like on Solaris, there are a series of psig(1), pstack(1),
ptree(1), etc, tools for similar sorts of per-process inspection purposes. I
think I prefer bundling it into a single tool, but it's certainly a similar
idea. Maybe I should just rename procstat(1) to pinfo(1) and be done with it?
Robert N M Watson
University of Cambridge
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