From: Walton Hoops <walton@...>
Date: 2010-01-16T01:40:37+09:00
Subject: Re: How to know the OS architecture (32 or 64 bits)?

On 1/15/2010 9:36 AM, Walton Hoops wrote:
> On 1/14/2010 4:12 PM, I単aki Baz Castillo wrote:
>> Hi, is there a reliable way under Ruby to know the OS architecture 
>> (32 or 64
>> bits)?
>>
>> I've just found RUBY_PLATFORM constant which returns "x86_64-linux" 
>> under 64
>> bits, however it doesn't send very reliable for me.
>>
>> I need a way working under Linux and BSD. Thanks for any suggestion.
>>
>
> I can't vouch for how accurate it is, but an OS gem was recently 
> announced on this list.
> gem install os
>
> irb(main):001:0> require 'os'
> => true
> irb(main):002:0> OS.bits
> => 64
> irb(main):004:0> OS.posix?
> => true
> irb(main):005:0>
>
>
Hmm.. it does not appear to deal with 32-bit ruby running on a 64 bit 
system though.
On my Windows 7 x64 (with 32-bit ruby):
irb(main):005:0> OS.bits
=> 32
irb(main):006:0> 1.size
=> 4
irb(main):007:0>