proper way to determine arch of *installed* OS, not processor?

[Chris Jones]

Jesse Palser wrote:
> On 05/06/2011 11:14 AM, Robert P. J. Day wrote:
>>    what is the proper incantation to determine the word size of the
>> installed OS?  that is, if i've installed the 32-bit version of ubuntu
>> on a 64-bit system, i want to know that the OS is 32 bits, even as the
>> processor is 64 bits.  i'm sure it's some option of "uname", but i
>> don't have such a system lying around to test it.  thanks.
>>
>> rday
> 
> Hi,
> 
> I did not know either, Google found this:
> uname -a
> (type in terminal)

The -a options prints all info. You can fine tune via

 > uname --help

pciy ~ > uname --help
Usage: uname [OPTION]...
Print certain system information.  With no OPTION, same as -s.

   -a, --all                print all information, in the following order,
                              except omit -p and -i if unknown:
   -s, --kernel-name        print the kernel name
   -n, --nodename           print the network node hostname
   -r, --kernel-release     print the kernel release
   -v, --kernel-version     print the kernel version
   -m, --machine            print the machine hardware name
   -p, --processor          print the processor type or "unknown"
   -i, --hardware-platform  print the hardware platform or "unknown"
   -o, --operating-system   print the operating system
       --help     display this help and exit
       --version  output version information and exit


Chris

> 
> Enjoy!
> 
> Jesse
> 
>