From: Collin Vandyck <gluedtomyseat@...>
Date: 2007-09-12T20:59:50+09:00
Subject: How to prevent child process from receiving INT signal?

Hello

I'm a bit new to Ruby, and I'm trying to set up a tomcat control script.
The main loop of the control script will allow the user to start, stop,
and configure various instances of Tomcat.

In this scenario, if a user wishes to start a tomcat instance, he/she
will type:

% start 8080

The script then will execute:

command = "8080/bin/catalina.sh start"
system command

And then the catalina.sh script will then execute some java [options...]
& in the background.

The control is then returned to the main program loop.  This works well.
However, any CTRL-C that the main Ruby control loop receives is always
propagated to the java process that is in the background, shutting down
all of the servers that I have started using this script.  I can't seem
to control this propagation. I've added:

trap("INT") {
  puts "Interrupt caught.."
}

Which works, but the interrupt still makes its way out to my child
processes. Is there any way that I can have these programs continue to
execute in the background?

Thanks for any help.
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