egrep -c 'lm' /proc/cpuinfo If output is nonzero then its a 64

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.?

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Answer Posted / anand

egrep -c 'lm' /proc/cpuinfo

If output is nonzero then its a 64 bit system or 32 bit

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