From: James Edward Gray II <james@...>
Date: 2007-07-15T13:12:41+09:00
Subject: Re: Calling a Perl script from Ruby

On Jul 14, 2007, at 9:44 PM, M. Edward (Ed) Borasky wrote:

> Dave Coleman wrote:
>> Tim Hunter wrote:
>>> Check out the system() method.
>> looks like system only returns true or false if the system call  
>> executes
>> successfully. What if you want to evaluate what's returned from that
>> perl script?
>>
> IIRC "system" returns the (implementation-dependent) numerical return
> code of the call, where by tradition "0" is success and non-zero is an
> application-dependent error number. If Ruby is returning "true" on
> success and "false" on failure, that's different from what many
> environments do.

It does, but you can get the exit code:

system("date")  # => true
$?.to_i         # => 0
# >> Sat Jul 14 23:11:49 CDT 2007

James Edward Gray II