From: James Smith <jmdjmsmith@...>
Date: 2006-11-21T02:06:19+09:00
Subject: Ruby help - controlling stdin, stdout

OK, I have a main Ruby program, which i would like to be able to execute 
other ruby programs from. I would like the main ruby program to simulate 
the actions of a command prompt (i'm using windows) i.e. i would like 
the main program to print out output from the running program and to 
know when input is needed.

I have the following:

IO.popen("ruby other_program", "r+") do |f|

# i can read and write to "other_program" here, however i want the main 
program to be prompted when the "other_program" is waiting for input

So, i think i need to override the STDIN and STOUT of the process in the 
"other_program", however i'm not sure how to do this, can anyone help 
please?

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