how to identify 32 vs 64 bit CPU?
Robert P. J. Day
rpjday at mindspring.com
Thu Aug 9 18:22:28 UTC 2007
On Thu, 9 Aug 2007, Chris Jones wrote:
>
> > How about uname? `uname -a` gives all of it. See `man uname` for subsets
> > and the ordering of the "-a" output. If you need more than just x86, I
> > think any solution will be a bit involved.
>
> AFAIK, uname only tells you what you are running, not what you
> *could* run. I.e. you couldn't tell the diffrence between a 32 bit
> os on a 64 bit capable machine or a 32 bit only machine.
i was just about to say something like that. on my athlon 64 system,
uname -a does include the string "athlon" in the output, but i don't
want to have to carefully parse the output looking for model names and
matching those names with word sizes.
so far, the "lm" string in /proc/cpuinfo looks like the best solution,
unless someone has a better idea.
rday
--
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Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA
http://fsdev.net/wiki/index.php?title=Main_Page
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