From: "Ara.T.Howard" <Ara.T.Howard@...>
Date: 2004-08-20T00:11:33+09:00
Subject: Config::CONFIG['SHELL'] - windows/*nix/mac


i'm working on a clustering system that runs jobs submitted to an nfs mounted
queue from n feeding nodes.  currently it's linux only and i use the following
to ensure a users job is executed on the remote node with the environment they
are accustomed to

   cmd = 'ls -ltar'

   pipe = IO.pipe

   unless((cid = fork))
     pipe.last.close
     STDIN.reopen pipe.first
     exec 'bash --login'
   else
     pipe.first.close
     pipe.last.puts cmd
   end


therefore there job executes in a login shell and their 'normal' environment
is there.  how would one go about this one windows?  obviously the fork has to
go but i'm getting around that by opening up a pipe to another ruby process
using IO.popen and sending a little ruby program down the pipe in order to be
able to fork/exec the job.  this is being done so i can make the child ruby
process do things like write me the pid back, redirect stdin/stdout, etc. -
all in a portable way...

thoughts?

-a
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