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Old 05-16-2006, 09:44 PM   #1
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Is there a way to know if im running a 32 bit processor or 64 bit processor?
Old 05-16-2006, 09:57 PM   #2
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cat /proc/cpuinfo. The model name will tell you what you've got. For example:

model name : Intel(R) Pentium(R) 4 Mobile CPU 1.70GHz


model name : AMD Athlon(tm) 64 Processor 3200+

If you don't know whether a specific model is 64-bit, and can't tell from the listed model name, then visit the vendor's web site and look up the specifications for that model.
Old 05-17-2006, 12:15 AM   #3
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Here's a neat little bash function that might help, pinched it from a Gentoo ebuild I was reading over the other day so I'm not 100% sure if uname -m returns the real machine arch or the arch the kernel was built for but it's gotta be a start.
guess_arch() {
	local x
	local host=$(echo "${CTARGET%%-*}" | sed -e 's/i.86/i386/' \
	                                         -e 's/sun4u/sparc64/' \
	                                         -e 's/arm.*/arm/' \
	                                         -e 's/sa110/arm/' \
	                                         -e 's/powerpc/ppc/')

	# Sort reverse so that we will get ppc64 before ppc, etc
	for x in $(ls -1 "${S}/include/arch/" | sort -r) ; do
		if [[ ${host} == "${x}" ]] ; then
			echo "${x}"
			return 0

	return 1


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