From: ts <decoux@...>
Date: 2001-03-03T00:25:17+09:00
Subject: [ruby-talk:11900] Re: rewrite with Ruby

>>>>> "M" == Max Ischenko <max@malva.com.ua> writes:

M> Why $? is nil when Ruby starts?

 $? is nil when ruby begin (not yet executed an external command) or when
ruby find an error before trying to execute the external command.

 This is, I think, to distinguish from 0 which mean that the last external
command was successfully executed.


Guy Decoux