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

[Robert P. J. Day]

  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
--

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

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