My hardware is 32 or 64 bit?

Novatian · 05-03-2014, 11:34 PM

Hi, how can I discern if my hardware is 32 or 64 bit?

Running Mint Olivia and my hardware is a Dell Inspirion Zino HD.

Shadow_7 · 05-03-2014, 11:51 PM

$ cat /proc/cpuinfo

If you have a " lm " in the output, then you are on 64 bit hardware. At least as far as x86 hardware goes.

metaschima · 05-04-2014, 11:24 AM

Definitely 64-bit compatible.

DJ Shaji · 05-06-2014, 05:42 PM

Look in dmesg | less. there'd be a bunch of stuff in there about things being 64 bit:

Code:

....
[    1.635718] pci 0000:00:14.0: reg 10: [mem 0xc3600000-0xc360ffff 64bit]
....
[    2.352647] ahci 0000:00:1f.2: flags: 64bit ncq pm led clo pio slum part ems apst

tramsch · 05-08-2014, 03:17 PM

Hi Novatian,

on a x86_64 the command:

Code:

$ uname -imp

should give an output like:

Code:

x86_64 x86_64 x86_64

DJ Shaji · 05-08-2014, 04:12 PM

Quote:

Originally Posted by tramsch

Hi Novatian,

on a x86_64 the command:

Code:

$ uname -imp

should give an output like:

Code:

x86_64 x86_64 x86_64

But that presupposes that OP is running a 64 bit distro, which might not be the case. The best solution is lscpu which will give detailed info about the processor.

tramsch · 05-09-2014, 12:45 AM

DJ Shari, you're right. A 32-bit iso (grml.org in this case) booted on a 64-bit machine actually gives:

Code:

# uname -imp
i686 unknown unknown

I am sorry for misleading. The uname man-page does not state that it is only asking the kernel, which I assume it is doing.

So as already stated, looking for the lm flag in "cat /proc/cpuinfo" is the way to go.
on 64-bit:

Code:

flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx rdtscp lm constant_tsc pni monitor ssse3 lahf_lm

on 32-bit:

Code:

flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 nx rdtscp constant_tsc pni monitor ssse3

Both examples come from a virtual environment, but I don't think that it matters here.

skimeer · 05-09-2014, 04:02 AM

You can check hardware arch using below command

Quote:

/usr/bin/getconf LONG_BIT

273 · 05-11-2014, 11:05 AM

Quote:

Originally Posted by skimeer

You can check hardware arch using below command

What does that return for a 32 bit OS running on 64 bit hardware though? I don't have a 32 bit VM to confirm but I would expect it to return 32 on a 32 bit OS?

Novatian · 05-12-2014, 03:53 AM

bm@bm-Inspiron-410 ~ $ lscpu
Architecture: i686
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 2

Thanks, so 64 bit, and where can I find these command lines you fellows pull?

johnsfine · 05-12-2014, 07:09 AM

Quote:

Originally Posted by skimeer

You can check hardware arch using below command

Code:

/usr/bin/getconf LONG_BIT

That is an unreliable way to check whether the kernel is 32 bit or 64 bit. It does not check the hardware. So as an answer in this thread, it is a bad answer to the wrong question.

DJ Shaji · 05-12-2014, 12:53 PM

Quote:

Originally Posted by Novatian

where can I find these command lines you fellows pull?

Most (all?) of these are standard on any linux system and should in all probability be installed by default.

Novatian · 05-14-2014, 06:56 AM

For example, lspci will give results but where is a resource with all the commands and their purposes?

pan64 · 05-14-2014, 07:22 AM

what do you mean by all the commands? Do you need something like this: http://linux.die.net/man/ ?

DJ Shaji · 05-14-2014, 06:22 PM

One way to browse through a list of available commands is to see the info pages. Just type

Code:

info

and you will see a list of available commands. The pages are hyperlinked, so clicking on the name of a program will give you it's description, which will be in a similar linked fashion. Press 'u' to go back.

I think what you are looking for is this, though.