Re: How to `echo' the core # a bash script is running on?

[Mathias Bauer <mbauer@gmx.org>]

* Andrei POPESCU wrote on 2014-02-09 at 19:36 (+0200):
> On Du, 09 feb 14, 18:14:29, Mathias Bauer wrote:
> > * Marco Ippolito wrote on 2014-02-09 at 13:24 (+0100):
> >
> > > How can I `echo', in `bash', the core # the current script
> > > is running on?
> >
> > you can try
> >
> >   $ grep ^processor /proc/cpuinfo | wc -l
>
> I think the OP wants to know on which particular core the
> script is running on.

I read "...core #..." as "...the number of cores on the
machine...".  Hm, yes, your interpretation is also possible.

Anyway, is it possible at all to determine the particular core
the current script is running?  I mean, there is one underlying
shell process.  But if the script uses a pipeline, a command that
is not builtin in bash, or just a simple while loop, etc. there
will surely be further (sub)processes.  I doubt they are all
running on the same core.  Therefore the particular core a shell
script is running on doesn't seem to be sensible?

Perhaps the OP wants to use taskset, cpuset and the like.  But
without providing much more details...

Regards,
Mathias