get process id

[Fairlight]

The honourable and venerable Kenneth Brody spoke thus:
> Fairlight wrote:
> [...]]
> > Keeping in mind that the PID itself is not unique unless bound to a date
> > and time, since PID-space recycles at around 32000-ish on most 32bit
> > operating systems, and even some 64bit ones (Solaris 7 and 8 come to mind).
> 
> Well, it's unique during its lifetime.  Depending on the purpose, this
> may be sufficient.

May be.

> > Ken, does USER directly exec() or does it use system()?
> 
> system() and popen() don't allow the two-way pipe that USER needs, so
> filePro uses fork()/exec() here.

Good, then the USER to the perl one-liner will work fine.

mark->
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