From: Joel VanderWerf <vjoel@...>
Date: 2003-03-16T11:12:09+09:00
Subject: mapping $? to text message


How do you go from $? (which refers to nil or a Process::Status 
instance) to a text message, sorta like perror(3) does?

Apparently irb knows how to do it, or maybe it's just connected to the 
stderr of the sh process:

irb(main):001:0> system 'qwerty'
false
irb(main):002:0> p $?
32512
nil
irb(main):003:0> `qwerty`
(irb):3: command not found: qwerty
""