Re: Identifying CPU and current OS

[Richard Owlett <rowlett@access.net>]

On 9/28/25 7:28 AM, songbird wrote:
> Richard Owlett wrote:
> > I may resurrect an former desktop machine as a trouble shooting aid.
> > I need to know the data bus width.
> >
> > I know the Debian version number is stored in /etc/debian_version .
> >
> > How do I find if the installed OS is 32 or 64 bit?
>
> $ uname -a
> Linux ant 6.16.8+deb14-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.16.8-1 (2025-09-21) x86_64 GNU/Linux
>
>
> > How do I discover the CPU's bus width?
>
> # this one has "address sizes	: 39 bits physical, 48 bits virtual" in it, but
> # i'm not sure all cpu versions have this...  may not be exactly what you are
> # looking for (data bus can be different than address bus)...
> $  cat /proc/cpuinfo | grep "address sizes" | head -1
> address sizes	: 39 bits physical, 48 bits virtual

Underlying my question was the assumption that when a processor was 
referred to as 32 or 64 bit, it was a reference to the width of the data 
bus.


>    songbird