From: Walton Hoops <walton@...>
Date: 2010-01-16T04:56:24+09:00
Subject: Re: How to know the OS architecture (32 or 64 bits)?

On 1/15/2010 9:59 AM, I単aki Baz Castillo wrote:
> El Viernes, 15 de Enero de 2010, I単aki Baz Castillo escribi坦:
>
>    
>> Note that to know the bits it uses "rbconfig" gem, and them:
>>      
> Well, "rbconfig" is not a gem but a Ruby built in library.
>
>
>
>    
>> In my server RbConfig::CONFIG['host_os'] = "linux-gnu" so finally it ends
>> doing:
>>
>>            if (1<<32).class == Fixnum
>>              64
>>            else
>>              32
>>            end
>>
>> Which is basically the same as doing
>>
>>    if 1.size == 8
>>      64
>>    else
>>      32
>>    end
>>
>>      
>
> Definitively I don't like "os" gem at all. It could use
> RbConfig::CONFIG['host_cpu'] rather than the not reliable
> RbConfig::CONFIG['host_os']:
>
>
> a) 32 bits host:
>
>    RbConfig::CONFIG['host_os']  =>  "linux-gnu"
>    RbConfig::CONFIG['host_cpu'] =>  "i486"
>
> b) 64 bits host:
>
>    RbConfig::CONFIG['host_os']  =>  "linux-gnu"
>    RbConfig::CONFIG['host_cpu'] =>  "x86_64"
>
>
>    
submit a bug! http://github.com/rdp/os

My main concern with that though:
Would RbConfig::CONFIG['host_cpu'] return "x86_64" if I'm running 32-bit 
Linux on a 64-bit CPU?