From: "Xavier Noëlle" <xavier.noelle@...>
Date: 2011-03-02T03:03:52+09:00
Subject: exec using sh -c or directly running the command, depending on the system

Hello !
I'm stuck in a situation I don't understand and I'm looking for clues
to know what and where to search explanations.
The problem is, as stated in the title, that my subprocess is
sometimes runned using "sh -c ruby runned.rb" and sometimes directly
"ruby runned.rb" (as seen in top), depending on the system: sh -c with
Ubuntu 10.4, directly with Debian 5 and Gentoo.

The scripts are as follow:
--------------------------->8--------------------------------------
# runned.rb
puts Process.pid
puts Process.ppid

# runner.rb
def runProcess(cmd)
  pid = nil

  begin
    pid = fork do
      exec(cmd)
      exit 1
    end
  rescue Errno::ENOENT
    $stderr.puts e
  end
  return pid
end

runProcess('ruby "runned.rb"', true)
--------------------------->8--------------------------------------

Thanks in advance and don't hesitate to give me a Google search to
solve my problem (I tried many of them, but none worked) !

-- 
Xavier NOELLE