Re: FW: 64 bit or 32 bit

[Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx>]

Benoit Rouits wrote:

> > How can I tell if a given system is running a 32bit krnel or a 64bit
> > kernel. I a system capable of running either, but I cannot figure
> > out which kernel is installed on it.
> 
> just make a C program like this:
> 
> int main()
> {
> 	printf("address bus is %d bytes\n",sizeof(void*));
> }
> and compile it with cc then run it.
> If it prints 8, it is a 64 bit OS, if it prints 4, it is a 32 bit OS.

That tells you which architecture the program was compiled for, not
which architecture the kernel was compiled for. x86_64 can run both
32- and 64-bit code.

-- 
Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx>
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