From: ara.t.howard@...
Date: 2006-07-27T04:18:38+09:00
Subject: Re: Question about Session [was: Driving Oracle sqlplus with open3]

On Thu, 27 Jul 2006, Daniel Berger wrote:

> ara.t.howard@noaa.gov wrote:
>
> <snip>
>
>> drive it via session or under sh - that way your environment will be picked
>> up.
>> 
>> -a
>
> Session looks interesting Ara, but how do I pass input to, say, an
> interactive script?  The README shows only output and error handles.
>
> Thanks,
>
> Dan


harp:~ > cat a.rb
# system 'gem install session'
require 'rubygems' rescue nil
require 'session'

#
# initialize with /bin/sh, there are other shells supported too
#
   sh = Session::Sh.new
#
# with redirects
#
   stdin, stdout, stderr = '42', '', ''
   sh.execute 'cat', 'stdin' => stdin, 'stdout' => stdout, 'stderr' => stderr
   puts stdout
#
# same thing
#
   stdin, stdout, stderr = '42', '', ''
   sh.execute 'cat', :stdin => stdin, :stdout => stdout, :stderr => stderr
   puts stdout
#
# same thing, for weak wrists
#
   stdin, stdout, stderr = '42', '', ''
   sh.execute 'cat', 0 => stdin, 1 => stdout, 2 => stderr
   puts stdout
#
# note that this is __one__ instance of /bin/sh - so variables/state persist
# between calls
#
   sh.execute 'var=42'
   sh.execute 'echo "var : $var"', 1=>STDOUT


harp:~ > ruby a.rb
42
42
42
var : 42


-a
-- 
suffering increases your inner strength.  also, the wishing for suffering
makes the suffering disappear.
- h.h. the 14th dali lama