the "proper" way to identify the bitness of your kernel and CPU


what is the fedora-approved way to identify the wordsize of both
your running kernel and your CPU? for the kernel, i'm used to running

$ uname -r

and just looking at the suffix, which in my case would be either
"i686" or "x86_64". is there a simpler way? does one of the "uname"
options reliably report just that portion -- the wordsize of the
running kernel?

and, secondly, regardless of the bitness of the kernel, what about
identifying the wordsize of the actual CPU (since you can obviously
have a 32-bit kernel running on an x86_64 CPU).

my standard tricks are one of:

$ grep lm /proc/cpuinfo (where "lm" stands for long mode)
$ getconf LONG_BIT (should print 32 or 64)

in that second case, would "uname -p" reliably show a 64-bit CPU, even
with a 32-bit OS?

thanks.

rday
--

========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry:
Have classroom, will lecture.

http://crashcourse.ca Waterloo, Ontario, CANADA
========================================================================

--
fedora-list mailing list
fedora-list@xxxxxxxxxx
To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines

Relevant Pages