From: Daniel Berger <djberge@...>
Date: 2003-02-19T00:55:59+09:00
Subject: Re: I need to check if a process is running

gp wrote:

> Hi,
>
> I need to check if a process is running.
> I have this code for this:
>
> ------------------------------------------
> pid="2212"
> cmd="ps -f p "+pid
> out=`#{cmd}`
> lines=out.split(/\n/)
> if (lines.length==1) then
>   print "Process with PID="+pid+" doesn't running.\n"
> end
> if (lines.length==2) then
>   print "Process with PID="+pid+" is running.\n"
> end
> ------------------------------------------
>
> Is there any other method for this?
> Is there any possibility to check this directly with ruby?
>
> Thanks,
> Gian Paolo

require "sys/proctable"
include Sys

ProcTable.ps{ |p|
   if p.pid == 2212
      puts "Process [" + p.pid.to_s + "] is running"
   end
}

# or

if ProcTable.ps(2212).empty?
   puts "Process not running"
end

sys-proctable is available on the RAA.  It currently supports Linux,
Solaris and FreeBSD.  Windows support on the way.

Regards,

Dan

--
a = [74, 117, 115, 116, 32, 65, 110, 111, 116, 104, 101, 114, 32, 82]
a.push(117,98, 121, 32, 72, 97, 99, 107, 101, 114)
puts a.pack("C*")