How can I know my linux os is 32 bit or 64 bit?
and How can i know my CPU is 32 bit or 64 bit in linux
machine environment.?

Answer Posted / rajeev

#uname -a
we get the information about os
and Regarding CPU
#grep flags /proc/cpuinfo
if cpu is in
Long mode - 64 bit CPU
Real mode 16 bit CPU
Protected Mode is 32-bit CPU

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