From: "Iñaki Baz Castillo" <ibc@...>
Date: 2009-12-12T22:49:46+09:00
Subject: Re: Is it possible to force a Ruby program to run as a proc name different than "ruby"?

El Sábado, 12 de Diciembre de 2009, Brian Candler escribió:
> Brian Candler wrote:
> > Iñaki Baz Castillo wrote:
> >> So, is there some way to force the process to appear as "rb_program" in
> >> /proc/PID/status?
> >
> > Have you tried
> >
> >   $0 = 'rb_program'
> >
> > ?
> 
> ... or I can't remember the details, but perhaps you needed
> $0.replace('rb_program'), but that doesn't work for newer versions of
> 
> Ruby where $0 is a frozen string, hence the required special code:
> > $progname = $0
> > alias $PROGRAM_NAME $0
> > alias $0 $progname
> > trace_var(:$0) {|val| $PROGRAM_NAME = val} # update for ps

Thanks a lot, it sounds really interesting.

However all the above works for me just by adding at the top:
   $0 = "rb_program"
or:
  $PROGRAM_NAME = "rb_program" 

With it when I do a "ps" I see "rb_program" which is great.

However in /proc/PID/status I still have the same described issues: "Name: 
ruby1.9", so I cannot do "killall rb_program".

This can be solved by using:
  #!/usr/local/bin/ruby1.9
rather than:
  #!/usr/bin/env ruby1.9

but of course hardcoding the location of ruby is not very good approach 
(specially when you want your code to run on any Linux system).

Thanks a lot.




-- 
Iñaki Baz Castillo <ibc@aliax.net>