PID File

[Kipton Moravec]

On Fri, 2012-04-27 at 16:18 -0400, Rashkae wrote:
> On 04/27/2012 03:46 PM, Steve Flynn wrote:
> > On 27 April 2012 18:04, Kipton Moravec<kip at kdream.com>  wrote:
> >> I am installing a program, and it has a PID file in /var/run
> >>
> >> It also looks like the start/stop for this application in /etc/init.d
> >> uses the pid file to start and stop the process.
> >>
> >> How do I find a number to use?
> > You don't. The pid is a "Process ID" and is generated on the fly by
> > the kernel. It's not like TCP ports where 'magic' numbers are
> > allocated and the SMTP is normally found on port 25., for example.
> >
> >> I can't find a table of "standard" process identification numbers. (Like
> >> the one for TCP or UDP ports).
> > Because there isn't one.
> >
> >> It looks like the maximum PID is 32767. So do I just go crazy and use
> >> something like 32000? Or are numbers<1000 available for this?
> > None of this is necessary, and it's impossible for you to specify a
> > specific pid to use for a process.
> >
> To clarify on this a bit.  You don't create the PID file when you 
> install/configure the program.  Rather, the script that starts the 
> program creates/updates the pid file when the program starts.
> 

O.K. but I got an error because it could not find the aprx.pid file. 
It did not work until I physically created a aprx.pid file I put the
number 67 in it.

But you are right, I just looked and now it has 2888 in it. So it
updated the number with the new PID when it started.

Thanks,
Kip