operating system - How to get whether OS is 32 bit or 64 bit by UNIX command? -

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how know bits of operating system? in advance.

in linux, answer such generic question using

uname -m

or even:

getconf long_bit

in c can use uname(2) system call.

in windows can use:

systeminfo | find /i "system type"

or examine environment:

set | find "programfiles(x86)"

(or getenv() in c)


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