Linux Version & CPU 32/64 bits

Linux Version

Type : $ uname -a

x86_64 GNU/Linux indicates that you've a 64bit Linux kernel running. If you use see i386/i486/i586/i686 it is a 32 bit kernel.

Find Out CPU is 32bit or 64bit?

$ grep flags /proc/cpuinfo

CPU Modes: lm flag means Long mode cpu - 64 bit CPU Real mode 16 bit CPU Protected Mode is 32-bit CPU

Centos version

#! - cat /etc/redhat-release

#2 -  cat /etc/issue

unix version

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