On Wed, May 4, 2016 at 9:08 AM, John Blinka <john.bli...@gmail.com> wrote: > > I had read similar thoughts about booting into a 64 bit environment before > posting and had gone to some effort to figure out whether the sysrescuecd > kernel was, in fact, 64 bit. Its /proc/config.gz seemed to indicate 64 bit, > as did uname -a. But I really don't know if there is a definitive way of > determining whether a running kernel is 64 or 32 bit.
Generally, 'uname -m' should report x86_64 for 64-bit (amd64) and i686 for 32-bit (x86). While it is possible to have a 64-bit kernel and 32-bit userland, the reverse is not possible. So another check can be 'file /sbin/init' which will report as something along the lines of "/sbin/init: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, stripped" Regards, Ron
