From: bob@... (Bob Proulx)
Date: 2004-10-10T09:45:10+09:00
Subject: How to exit properly with a signal?

How are signals properly handled in ruby?  (I am new to ruby but
experienced with C, sh and perl.)

Run, then interrupt it while it is in the sleep:

  sh -c 'sleep 10' ; echo $?

  130

However, this same script in ruby is trapped by the ruby default
signal handler.

  ruby -e 'sleep 10' ; echo $?
  -e:1:in `sleep': Interrupt      from -e:1
  1

How may I have ruby's program exit code properly reflect to the caller
that it was terminated on a signal?  And also how may I prevent the
default handler from printing extraneous information?

The perl version behaves as desired here similar to the shell version.

  perl -e 'sleep 10' ; echo $?

  130

I want to replace some existing programs with ruby equivalents.
I am using ruby 1.8.2 from Debian sid/unstable.

Thanks
Bob