Checking if 32bit or 64bit

BillHicksRIP · 9 Sep 2009 at 16:07

Hi. I've googled this a bit but am still none the wiser. I've got a CentOS 5.2 image running under VMWare but am unsure if it's the 32bit or 64bit version of the OS. I assumed the i686 bit says it's the 64bit version, but why does i386 get mentioned from uname -a?

uname -a
Linux mylin 2.6.18-92.el5 #1 SMP Tue Jun 10 18:49:47 EDT 2008 i686 i686 i386 GNU/Linux

[root@mylin ~]# arch
i686

Earth[Tera].bin · 9 Sep 2009 at 16:13

No i686 is 32-bit, just refers to newer chips.

.walls · 9 Sep 2009 at 16:44

If it was 64 bit, uname -a would state amd64. i686 is an x86 (32 bit) architecture.

BillHicksRIP · 9 Sep 2009 at 17:16

Fair do's - thanks!